זמנים
הלכות חמץ ומצה
פרק ו

Halacha

הלכה א
מִצְוַת עֲשֵׂה מִן הַתּוֹרָה לֶאֱכל מַצָּה בְּלֵיל חֲמִשָּׁה עָשָׂר שֶׁנֶּאֱמַר (שמות יב יח) "בָּעֶרֶב תֹּאכְלוּ מַצֹּת". בְּכָל מָקוֹם וּבְכָל זְמַן. וְלֹא תָּלָה אֲכִילָה זוֹ בְּקָרְבַּן הַפֶּסַח אֶלָּא זוֹ מִצְוָה בִּפְנֵי עַצְמָהּ וּמִצְוָתָהּ כָּל הַלַּיְלָה. אֲבָל בִּשְׁאָר הָרֶגֶל אֲכִילַת מַצָּה רְשׁוּת רָצָה אוֹכֵל מַצָּה רָצָה אוֹכֵל אֹרֶז אוֹ דֹּחַן אוֹ קְלָיוֹת אוֹ פֵּרוֹת. אֲבָל בְּלֵיל חֲמִשָּׁה עָשָׂר בִּלְבַד חוֹבָה. וּמִשֶּׁאָכַל כְּזַיִת יָצָא יְדֵי חוֹבָתוֹ:
כסף משנה
1.
It is a positive commandment of the Torah to eat matzah on the night of the fifteenth [of Nisan], as [Exodus 12:18] states: "In the evening, you shall eat matzot." This applies in every place and at every time. Eating [matzah] is not dependent on the Paschal sacrifice. Rather, it is a mitzvah in its own right. The mitzvah may be fulfilled throughout the entire night.
Throughout the other days of the festival, eating matzah is left to one's choice: If one desires, one may eat matzah. If one desires, one may eat rice, millet, roasted seeds, or fruit. Nevertheless, on the night of the fifteenth alone, [eating matzah] is an obligation. Once one eats the size of an olive, he has fulfilled his obligation.

הלכה ב
בָּלַע מַצָּה יָצָא. בָּלַע מָרוֹר לֹא יָצָא. בָּלַע מַצָּה וּמָרוֹר כְּאֶחָד יְדֵי מַצָּה יָצָא יְדֵי מָרוֹר לֹא יָצָא. שֶׁהַמָּרוֹר כִּטְפֵלָה לַמַּצָּה. כְּרָכָן בְּסִיב וְכַיּוֹצֵא בּוֹ וּבְלָעָן אַף יְדֵי מַצָּה לֹא יָצָא:
כסף משנה
2.
A person who swallows matzah1gulping it down, without chewing or tasting it [without chewing it] fulfills his obligation.2for as long as the matzah touches his throat and is ingested, it has been eaten. Nevertheless, it is not desirable to fulfill one's obligation in this manner (Magen Avraham, Orach Chayim 475). A person who swallows maror3in the same manner [without chewing it] does not fulfill his obligation.4The Rashbam, Pesachim 115b explains that the maror was instituted to recall the bitterness with which the Egyptians afflicted our ancestors. Therefore, a person who does not taste that bitterness does not fulfill his obligation.
Alternatively, certain texts of the Mishneh Torah (and Pesachim, ibid.) read "A person who swallows maror fulfills his obligation." The proponents of this text maintain that it is impossible to swallow a piece of maror the size of an olive without feeling some bitterness. Nevertheless, the Shulchan Aruch (475:3) quotes the former text.
A person who swallows matzah and maror together fulfills the obligation of matzah,5as above. There is an added undesirable factor in eating matzah in this manner. Preferably, no other substances should be eaten with the matzah, so that only its taste will be sensed. (Indeed, were he to chew both the matzah and the maror, he would not fulfill his obligation (See Pesachim 115a). To insure that nothing negate the taste of the matzah, in many communities it is customary not to dip the matzah in salt when eating it at the seder). but not that of maror, for the maror is secondary to the matzah.6The Ra'avad raises a question, noting that the latter phrase is not an explanation why one does not fulfill the mitzvah of maror.
The Maggid Mishneh explains that the Rambam's intention is to explain why the person fulfills the mitzvah of matzah. One might argue that the maror, like the fibers mentioned in the following clause, would prevent one from fulfilling the mitzvah of matzah. Therefore, the Rambam explains that "the maror is secondary..."
It must be noted that according to the second version of the text mentioned above, the passage reads with no difficulty whatsoever.
If he wrapped them in fibers or the like and swallowed them,7the matzah, maror, and fibers he does not even fulfill the obligation of matzah.8for unlike the maror, the fibers are considered as an interruption between the person's digestive system and the matzah. The fibers are placed in this category because they are not food in their own right. (A similar concept is stated in Hilchot Sha'ar Avot HaTum'ah 3:5.) In contrast, all other foods are considered secondary to the matzah and, hence not an interruption (Pri Chadash).

הלכה ג
אָכַל מַצָּה בְּלֹא כַּוָּנָה כְּגוֹן שֶׁאֲנָסוּהוּ עַכּוּ''ם אוֹ לִסְטִים לֶאֱכֹל יָצָא יְדֵי חוֹבָתוֹ. אָכַל כְּזַיִת מַצָּה וְהוּא נִכְפֶּה בְּעֵת שְׁטוּתוֹ וְאַחַר כָּךְ נִתְרַפֵּא חַיָּב לֶאֱכל אַחַר שֶׁנִּתְרַפֵּא. לְפִי שֶׁאוֹתָהּ אֲכִילָה הָיְתָה בְּשָׁעָה שֶׁהָיָה פָּטוּר מִכָּל הַמִּצְוֹת:
כסף משנה
3.
A person who eats matzah without the intention [to fulfill the mitzvah]1This halachah touches on a question left unresolved by the Talmud (see Pesachim 114b), and which has become a source of debate and discussion among the Rabbis in subsequent generations. Does a person who performs the deed of a mitzvah, without the intention to carry out God's command, fulfill his obligation, or not? - e.g., gentiles or thieves force him to eat2The source for the Rambam's statements is Rosh HaShanah 28a, which states that when "Persians force a person to eat matzah, he fulfills his obligation." - fulfills his obligation.3It appears that the Rambam does not require a person to have the intention to fulfill a mitzvah, for in this instance the only reason the person ate the matzah was the coercion of the gentiles. Nevertheless, the commentaries qualify the Rambam's statements, based on Hilchot Shofar 2:4:A person who occupies himself with blowing shofar to learn does not fulfill his obligation... one does not fulfill his obligation until both the person hearing [the shofar] and the one sounding it intend to fulfill the obligation.In resolution, the Maggid Mishneh states that to fulfill his obligation, the person being forced to eat the matzah must know that today is Pesach, that he is obligated to eat matzah, and that it is matzah which he is eating. Rabbenu Nissim, the Kessef Mishneh, and Rabbenu Manoach follow a different line of reasoning. They differentiate between eating matzah and hearing a shofar. In the former case, a person's body benefits from the activity regardless of his intention. To support this thesis, they draw a parallel to the following passage from Keritot 19b.
Generally, the Torah frees a person from liability if he commits a transgression while being only מתעסק (performing a deed without any thought). However, a person who eats forbidden foods or engages in forbidden sexual relations in this manner is liable, because he derived pleasure from his activities.
Similarly, in the present context, since the person derived physical satisfaction from eating the matzah, even though he was forced to do so, the action is attributed to him. In contrast, since his body did not benefit from hearing the shofar, he does not fulfill his obligation until he hears the shofar blown in the proper manner.
The Shulchan Aruch (Orach Chayim 475:4) quotes the Maggid Mishneh's opinion as regards halachah l'ma'aseh, and the Shulchan Aruch HaRav adds the explanation mentioned in the name of the Kessef Mishneh. (It must be noted that the Pri Chadash and other commentaries do not accept this decision). In Orach Chayim 589:8, the Shulchan Aruch quotes the Rambam's decision concerning blowing the shofar, stating that a מתעסק does not fulfill the mitzvah. Similar decisions are rendered concerning kriat shema (Orach Chayim 60) and lulav and etrog (Orach Chayim 651).

A person who ate a כזית matzah in delirium, while possessed by an epileptic fit, and afterwards recovered,4This does not imply that he was necessarily healed of epilepsy entirely, but rather that the seizure was concluded and he was able to return to normal functioning. is obligated to eat another [כזית].5to fulfill the mitzvah because The consumption of [the first כזית] took place while he was free from the obligation to perform any mitzvot.6because he was not in control of himself. Thus, his actions in that state do not obligate him for any transgressions he violates, nor does he receive full credit for any mitzvot he performs.

הלכה ד
אֵין אָדָם יוֹצֵא יְדֵי חוֹבַת אֲכִילַת מַצָּה אֶלָּא אִם כֵּן אֲכָלָהּ מֵאֶחָד מֵחֲמֵשֶׁת הַמִּינִין שֶׁנֶּאֱמַר (דברים טז ג) "לֹא תֹאכַל עָלָיו חָמֵץ שִׁבְעַת יָמִים תֹּאכַל עָלָיו מַצּוֹת". דְּבָרִים הַבָּאִים לִידֵי חִמּוּץ אִם אֲכָלָן מַצָּה יָצָא בָּהֶן יְדֵי חוֹבָתוֹ אֲבָל שְׁאָר דְּבָרִים כְּגוֹן אֹרֶז וְדֹחַן וְקִטְנִיּוֹת אֵין יוֹצֵא בָּהֶן יְדֵי מַצָּה לְפִי שֶׁאֵין בָּהֶן חָמֵץ:
כסף משנה
4.
A person does not fulfill the obligation of eating matzah unless he partakes [of matzah made] from one of the five species1wheat, rye, barley, oats, and spelt, as stated in Halachah 5:1. [of grain],2The Ramah (Orach Chayim 453:1) states that it is customary to use matzot made from wheat. as [Deuteronomy3In his commentary on the Mishnah (Challah 1:2), the Rambam cites two verses while explaining this principle: Exodus 12:18, "in the evening, you shall eat matzot" and the verse cited here. Similarly, certain manuscripts of the Mishneh Torah contain both verses. The fact that the mitzvah to eat matzah is derived from the verse in Exodus and not the verse in Deuteronomy tends to support the text which quotes both verses. However, Pesachim 35a, the source for the exegesis of this verse, only mentions one verse. 16:3] states: "Do not eat chametz upon it... eat matzot for seven days."
[From the verse's association of chametz and matzah, we may derive:] substances which can become leavened4that would become leavened if left unattended for the required period. may be eaten as matzah to fulfill one's obligation.5as evident from the following halachah, the actual dough used to make the matzah need not have the potential to become leavened. However, the species of grain used as flour must be fit to become leavened. (See Lechem Mishneh, Halachah 5.) In contrast, other substances6e.g. rice, millet, and kitniyot - cannot be used to fulfill the obligation of matzah, for they can never become leavened -- rather they spoil, as stated in Halachah 5:1. - e.g., rice, millet, and kitniyot - cannot be used to fulfill the obligation of matzah, for they can never become leavened.

הלכה ה
הָעוֹשֶׂה עִסָּה מִן הַחִטִּים וּמִן הָאֹרֶז אִם יֵשׁ בָּהּ טַעַם דָּגָן יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ. עִסַּת הַכְּלָבִים בִּזְמַן שֶׁהָרוֹעִים אוֹכְלִין מִמֶּנָּה יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ. אֵין הָרוֹעִים אוֹכְלִין מִמֶּנָּה אֵינוֹ יוֹצֵא בָּהּ שֶׁאֵין זוֹ מְשֻׁמֶּרֶת לְשֵׁם מַצָּה. מַצָּה שֶׁלָּשָׁהּ בְּמֵי פֵּרוֹת יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ בְּפֶסַח. אֲבָל אֵין לָשִׁין אוֹתָהּ בְּיַיִן אוֹ בְּשֶׁמֶן אוֹ חָלָב מִשּׁוּם (דברים טז ג) "לֶחֶם עֹנִי" כְּמוֹ שֶׁבֵּאַרְנוּ. וְאִם לָשׁ וְאָכַל לֹא יָצָא יְדֵי חוֹבָתוֹ. אֵין יוֹצְאִין לֹא בְּפַת מֻרְסָן וְלֹא בְּפַת סֻבִּין. אֲבָל לָשׁ הוּא אֶת הַקֶּמַח בַּסֻּבִּין שֶׁלּוֹ וּבְמוּרְסָנוֹ וְעוֹשֵׂהוּ פַּת וְיוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ. וְכֵן פַּת סלֶת נְקִיָּה בְּיוֹתֵר הֲרֵי זוֹ מֻתֶּרֶת וְיוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ בְּפֶסַח וְאֵין אוֹמְרִין בָּהּ אֵין זֶה לֶחֶם עֹנִי:
כסף משנה
5.
A person who makes dough from wheat and rice:1combining the two species in one matzah if it has the taste of grain,2Based on the Jerusalem Talmud (Challah 3:5), the Ramban and Rabbenu Asher maintain that as long as the matzah tastes of grain, one may fulfill one's requirement even though the amount of wheat flour is not sufficient to produce a כזית (size of an olive) of wheat flour in כדי אכילת פרס (a quantity equivalent in volume to three eggs according to the Rambam, two eggs according to other authorities; see the commentary on Halachah 1:6).
They explain that when mixed with wheat, rice takes on the taste of the wheat to the point that its own flavor is not noticeable at all. Hence, there is no limit to the quantity of wheat required. In contrast, other kitniyot do not "accept" the flavor of wheat so easily (nor does rice "accept" the flavor of the other four species of grain). Hence, if they are mixed with wheat, there has to be a sufficient quantity of wheat (a כזית within פרס כדי אכילת) for one to fulfill his obligation.
The Ra'avad and the Rashbah do not accept the principle explained by the Ramban, and require a כזית in פרס כדי אכילת even when a dough is made of rice and wheat. The Shulchan Aruch (Orach Chayim 453:2) quotes the Rambam's words exactly. The commentaries infer that this implies acceptance of the Ramban's view. The later authorities quote the Ra'avad's opinion and suggest adhering to it, though theoretically, they find the Ramban's view more acceptable.
one may fulfill his obligation with it.3as if it were made of wheat alone. Dough made as food for dogs:4In his commentary on the Mishnah (Challah 1:8), the Rambam describes this as coarse bread mixed together with bran. if the shepherds also eat from it,5and thus, it is also considered human food one may fulfill his obligation with it. If the shepherds do not eat from it,6and use it merely to feed the animals, it is not forbidden. Were it to be chametz, it would not be permitted to be used for that purpose since no benefit may be derived from chametz during Pesach. Nevertheless, one cannot fulfill his obligation7to eat matzah the first night of Pesach by eating it, for it is not watched for the sake of eating matzah.8as explained in Halachah 5:9, the matzah used to fulfill the mitzvah must be "watched" so that it does not become chametz. Furthermore, every stage of its preparation should be carried out with the intent that it be used to fulfill the mitzvah. Since this dough was made to be used only as food for dogs, surely this intent was lacking.
Matzah that was kneaded with fruit juice,9Fruit juice itself will not cause flour to become leavened, as stated in Halachah 5:2; nevertheless, one may fulfill one's obligation with it on Pesach.10because the species of grain can become leavened. As mentioned above, it is Ashkenazic custom not to use such matzah on Pesach unless the person is incapable of eating ordinary matzah. However, [the dough] should not be kneaded with wine, oil, honey, or milk, because of the requirement for poor man's bread, as explained above.11in Halachah 5:20. There is a slight difficulty with this statement. The halachah cited states that only water should be used for the matzah. The Radbaz (Vol. III, Responsum 1074) states that only the four liquids mentioned here may not be used, for only they change the taste of the matzah appreciably. However, the Ra'avad and the Shulchan Aruch (Orach Chayim 462:1) forbid the use of matzah made with any liquid other than water for use at the seder. A person who kneaded [dough with one of these liquids] does not fulfill his obligation.12Pesachim 36a relates that Rabbi Yehoshua told his sons to make him matzah kneaded with milk throughout Pesach, except on the first night.
One cannot fulfill his obligation with matzah made from thin bran or14It is abnormal to make bread from bran alone. Therefore, Challah need not be separated from such a loaf, nor may it be used for the mitzvah of matzah. See Shulchan Aruch, Orach Chayim 454:1. coarse13as mentioned above, there is a debate among the Rabbis which Hebrew term is appropriate to which type of bran. bran. However, one may knead flour together with its bran and make it into a loaf and fulfill one's obligation with it.15for then, the flour is considered of primary importance. Similarly, a loaf made with very fine flour16Pesachim 36b states "even if it is like King Solomon's matzah." is permitted, and a person may fulfill his obligation with it. We do not say: this is not poor man's bread.

הלכה ו
אֶחָד מַצָּה שֶׁנֶּאֱפֵית בְּתַנּוּר אוֹ בְּאִלְפָּס. בֵּין שֶׁהִדְבִּיק הַבָּצֵק בַּאִלְפָּס וְאַחַר כָּךְ הִרְתִּיחַ בֵּין שֶׁהִרְתִּיחַ וְאַחַר כָּךְ הִדְבִּיק אֲפִלּוּ אֲפָאָהּ בַּקַּרְקַע הֲרֵי זֶה יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ. וְכֵן אִם לֹא נַאֲפֵית אֲפִיָּה גְּמוּרָה יוֹצְאִין בָּהּ. וְהוּא שֶׁלֹּא יִהְיוּ חוּטִין שֶׁל בָּצֵק נִמְשָׁכִין מִמֶּנָּה בְּעֵת שֶׁפּוֹרְסָהּ. וְיוֹצְאִין בְּרָקִיק הַשָּׁרוּי וְהוּא שֶׁלֹּא נִמּוֹחַ. אֲבָל מַצָּה שֶׁבִּשְּׁלָהּ אֵינוֹ יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ בַּאֲכִילָתָהּ שֶׁהֲרֵי אֵין בָּהּ טַעַם פַּת:
כסף משנה
6.
[One may fulfill his obligation] with matzah baked in either an oven1as is usually done or a roasting pot.2as is occasionally the case. The dough is prepared as if for baking in an oven, and then placed in a roasting pot or frying pan. In his commentary on the Mishnah (Challah 1:6), the Rambam explains that even when bread is baked in this fashion, one is obligated to separate Challah. Hence, such a loaf is also considered as bread with regard to matzah. This applies whether the dough was stuck to the roasting pot and then the [pot] was heated,3The Rambam uses the word הרתיח, which is generally translated as "boiled." However, in this instance, all commentators agree that no water can be used. or whether the [pot] was heated and then the [dough] stuck to it.4In the latter instance, the Ra'avad agrees with the principle that such matzah is considered as bread and is able to be used for the mitzvah of matzah. However, he objects to this manner of preparation out of fear that perhaps the dough will become chametz. The Shulchan Aruch (Orach Chayim 461:2) suggests adhering to his opinion. Even if the dough was baked in the ground, one may fulfill his obligation with it.5Berachot 38a describes the process of baking bread in a pit in the ground and states that one may use it as matzah for the seder.
Similarly, even if the matzah was not thoroughly baked,6Within the context of this law, the Ramah (Orach Chayim 461:3) counsels against removing dough prematurely from the oven and then returning it. During the time it is outside the oven, it can become chametz. one may fulfill his obligation with it, provided strands of dough will not extend from it when broken.7
פורסה usually means sliced. Our translation follows Rabbenu Manoach's commentary and Rashi, Pesachim 37a.
A person8This law is relevant to a person who is old or sick and cannot eat the required amount (כזית) of matzah in the normal manner, as mentioned in Halachah 10. Nevertheless, its application is not solely restricted to these persons. None of the commentaries has placed any restrictions against healthy people fulfilling their obligation in this manner. (As mentioned in Halachah 5:5, some Ashkenazi authorities forbid soaking matzah in water after it has been baked.) may fulfill his obligation with a cake [of matzah]9which after being baked, has been soaked10As mentioned in Halachah 5:5, once matzah has been baked thoroughly, it will not become chametz even when exposed to water. [in other substances],11In his commentary on Pesachim 41a, the source for this law, Rashi allows one to soak matzah in cooked foods with a taste of their own. Similarly, Rabbenu Manoach mentions matzah dipped in wine. Nevertheless, the Ra'avad and others maintain that other foods would nullify the taste of matzah, and they permit soaking the matzah only in water. They draw support from the Rambam's statements in Halachah 10 and maintain that he also accepts this restriction.
The Magen Avraham and the other Ashkenazic authorities favor the latter opinion. However, they do maintain that a sick person who could not eat a sufficient quantity of matzah soaked in water may soak his matzah in wine.
so long as it has not dissolved.12at which point it would no longer be considered as bread, and the HaMotzi blessing would no longer be recited over it. However, a person cannot fulfill his obligation with matzah that has been cooked,13even if cooked in water alone, for it does not have the taste14or the form of bread.

הלכה ז
אֵין אָדָם יוֹצֵא יְדֵי חוֹבָתוֹ בַּאֲכִילַת מַצָּה שֶׁהִיא אֲסוּרָה לוֹ כְּגוֹן שֶׁאָכַל בּוֹ טֶבֶל אוֹ מַעֲשֵׂר רִאשׁוֹן שֶׁלֹּא נִטְּלָה תְּרוּמָתוֹ אוֹ שֶׁגְּזָלָהּ. זֶה הַכְּלָל כָּל שֶׁמְּבָרְכִין עָלָיו בִּרְכַּת הַמָּזוֹן יוֹצֵא בּוֹ יְדֵי חוֹבָתוֹ וְכָל שֶׁאֵין מְבָרְכִין עָלָיו בִּרְכַּת הַמָּזוֹן אֵין יוֹצֵא בּוֹ יְדֵי חוֹבָתוֹ:
כסף משנה
7.
A person cannot fulfill his obligation by eating matzah which is forbidden to him; for example, a person who ate [matzah made from] tevel,1produce from Eretz Yisrael from which the agricultural requirements — separation of the terumah (a portion given to priests), ma'aser rishon (the first tithe), and ma'aser sheni (the second tithe) — have not been fulfilled. [matzah made from] the first tithe from which terumat [ma'aser] had not been separated,2After receiving the tithe from the Israelites, the Levites were obligated to separate a second tithe, as commanded in Numbers 18:26. or [matzah] that was stolen.3The Jerusalem Talmud, Challah 1:9, states:Matzah that was stolen: one may not recite a blessing upon it. Rav Oshiah states: This is derived from Psalms 10:3: "The greedy's blessing revolts God."
However, one might think this is true only in the beginning; ultimately (i.e., after eating the matzah), he is obligated to pay him money (and thus the matzah itself is no longer the property of the original owner.)
Rabbi Yochanan states: "A mitzvah is not a sin." Rabbi Yossi states: "A sin is not a mitzvah." Rabbi Illa said: "Only when the mitzvot are performed as prescribed are they mitzvot."The Shulchan Aruch (Orach Chayim 454:4) quotes the Rambam's statements exactly. Nevertheless, Rabbi Akiva Eiger maintains that since the stolen object no longer belongs to the original owners once it has been eaten, one may fulfill the mitzvah of matzah in this manner. All authorities agree that a person who stole grain or flour can fulfill his obligation with matzah made from it.
Rabbenu Manoach maintains that this instance is not dependent on the general rulings governing mitzvot performed with forbidden objects. Rather, Pesachim 38a draws an analogy between the mitzvot of matzah and Challah. Since there is an explicit teaching requiring a person to own the dough he uses for Challah, it thus follows that the matzah he uses must also be his undisputed property.

This is the governing principle: All [matzah] upon which the grace after meals is recited4even though there are certain halachic difficulties regarding eating it, as explained in Hilchot Berachot 1:20. may be used to fulfill one's obligation.5to eat matzah on Pesach. If the grace after meals may not be recited upon it, it may not be used to fulfill one's obligation.6In Hilchot Berachot 1:19, the Rambam states: "Anyone who eats a forbidden food, whether intentionally or unintentionally, does not recite a blessing over it." This includes even foods prohibited by Rabbinic law alone.

הלכה ח
הַכֹּהֲנִים יוֹצְאִין בְּחַלָּה וּבִתְרוּמָה אַף עַל פִּי שֶׁהִיא מַצָּה שֶׁאֵינָהּ רְאוּיָה לְכָל אָדָם. וְכֵן יוֹצְאִין בְּמַצָּה שֶׁל מַעֲשֵׂר שֵׁנִי בִּירוּשָׁלַיִם. אֲבָל אֵין יוֹצְאִין בְּמַצָּה שֶׁל בִּכּוּרִים אֲפִלּוּ בִּירוּשָׁלַיִם מִפְּנֵי שֶׁהַבִּכּוּרִים אֵין לָהֶם הֶתֵּר בְּכָל הַמּוֹשָׁבוֹת. וּמַעֲשֵׂר שֵׁנִי אֶפְשָׁר שֶׁיִּפָּדֶה וְיֵאָכֵל בְּכָל מָקוֹם. וְכָתוּב (שמות יב כ) "בְּכל מוֹשְׁבֹתֵיכֶם תֹּאכְלוּ מַצּוֹת" מַצָּה הָרְאוּיָה לְהֵאָכֵל בְּכָל הַמּוֹשָׁבוֹת הוּא שֶׁיּוֹצְאִין בָּהּ יְדֵי חוֹבָה:
כסף משנה
8.
The priests1and their households may fulfill their obligation with [matzot made from] Challah2Numbers 15:20 commands that a portion of every dough be separated and given to the priests. This portion of dough is called Challah and is governed by all the rules pertaining to Terumah. or terumah3Numbers 15:19, 18:12 commands that before tithes are given to the Levites, a certain portion of the grain should be separated and given to the priests. This portion, referred to as terumah, may be eaten only by the priests and their households. even though it is matzah which is not suited to be eaten by all people.4Thus, Israelites cannot fulfill their obligation by eating such matzah. Pesachim 35b states that matzot whose consumption involves any prohibition may not be used to fulfill the mitzvah of matzah. (See the previous halachah.) Similarly, a person may fulfill his obligation with matzah [made] from ma'aser sheni5Deuteronomy 14:22-23 commands: "Take a [second] tithe of all the crops... You must eat this before God, your Lord, in the place that He will choose (Jerusalem)." [if he is] in Jerusalem.6but not outside the holy city. It must be noted that certain Talmudic Sages do not accept this principle. The Rambam's statements follow the opinion of Rabbi Akiva, whose statements are generally accepted as halachah. However, one7a priest, for only the priests are allowed to partake of the bikkurim, may not fulfill his obligation with matzah made from bikkurim8Numbers 18:13 requires that the first fruits be given to the priests. Deuteronomy 26:2-10 explains more details of that obligation, among them that the first fruits must be taken to Jerusalem and given to the priests in the Temple. even [if he is] in Jerusalem.9and the wheat from which he made matzah had been properly given to him as bikkurim.
[The difference is] because there is no permissible way of eating bikkurim in all [Jewish] settlements.10rather, they may be eaten only by the priests within the limits of Jerusalem. [In contrast,] ma'aser sheni can be redeemed and eaten in all [Jewish] settlements.11Deuteronomy 14:24-26 states:If the journey is too great for you... you may redeem this tithe in silver... which you can bring to the place God, your Lord, will choose. You may spend the money on anything you desire [to eat]...Thus the actual produce separated as ma'aser sheni need not be taken to Jerusalem, but may be eaten elsewhere. [Our Sages12Pesachim 36a interpreted Exodus 12:20,] which states: "Eat matzot in all of your settlements," [to imply that] only matzah that is fit to be eaten in all settlements may be used to fulfill one's obligation.13Thus, bikkurim are excluded, but not ma'aser sheni.

הלכה ט
חַלּוֹת תּוֹדָה וּרְקִיקֵי נָזִיר שֶׁעָשׂוּ אוֹתָן לְעַצְמָן אֵין יוֹצְאִין בָּהֶן שֶׁנֶּאֱמַר (שמות יב יז) "וּשְׁמַרְתֶּם אֶת הַמַּצּוֹת" מַצָּה הַמִּשְׁתַּמֶּרֶת לְעִנְיַן מַצָּה בִּלְבַד הוּא שֶׁיּוֹצְאִין בָּהּ אֲבָל זוֹ מִשְׁתַּמֶּרֶת לְעִנְיַן הַזֶּבַח. וְאִם עֲשָׂאָן לִמְכֹּר בַּשּׁוּק הֲרֵי זֶה יוֹצֵא בָּהּ יְדֵי חוֹבָתוֹ. שֶׁהָעוֹשֶׂה לִמְכֹּר בַּשּׁוּק דַּעְתּוֹ שֶׁאִם לֹא יִמָּכְרוּ יֹאכַל אוֹתָן וְנִמְצָא בִּשְׁעַת עֲשִׂיָּתָן שְׁמָרָן לְשֵׁם מַצָּה:
כסף משנה
9.
Loaves from the thanksgiving offering1as explained in Leviticus 7:12 and commentaries, the thanksgiving offering was accompanied by forty loaves of bread. Thirty were matzah, and thus were kosher for use on Pesach. and cakes from the Nazirite offering,2Numbers 6:15 specifies that a Nazirite must bring a basket of matzot as part of the sacrifices associated with the completion of his vow. which an individual made for his personal use,3i.e., to offer as a sacrifice. may not be used to fulfill one's obligation,4to eat matzah on Pesach night. [as can be implied] from the statement [Exodus 12:17]: "And you shall watch the matzot."5Halachah 5:9 states that this verse teaches that matzah must be prepared with the intention that it be used to fulfill the mitzvah of eating matzah. Pesachim 38b extends the scope of that requirement, stating: Matzah which is watched with the sole intention [that it be used to fulfill the mitzvah] of matzah may be used to fulfill one's obligation. However, this matzah6from the thanksgiving or Nazirite offerings is also watched with the intention of [being used for a] sacrifice.7Hence, it may not be used to fulfill the mitzvah of matzah. Those8matzot made for the thanksgiving or Nazirite offerings that were made to be sold in the marketplace,9for others to use [the baker] has the intention that if they are not sold, he will eat them. Therefore, while he was making them10implicit in his intention was that he [also] watched for the sake of matzah.11Therefore, they may be used to fulfill the mitzvah of matzah.
Rabbenu Manoach and other commentators note that the matzot for these sacrifices would have to be prepared before the thirteenth of Nisan. (A thanksgiving sacrifice could not be brought on the fourteenth, because of the ten breads that were chametz.) From this, he draws support for the practice of preparing matzot before Pesach, even though the common custom in his day was to bake them on the afternoon of the fourteenth. The need to find support for this practice may seem strange for members of many communities today whose matzot may be prepared in the heart of winter.

הלכה י
הַכּל חַיָּבִין בַּאֲכִילַת מַצָּה אֲפִלּוּ נָשִׁים וַעֲבָדִים. קָטָן שֶׁיָּכוֹל לֶאֱכל פַּת מְחַנְּכִין אוֹתוֹ בְּמִצְוֹת וּמַאֲכִילִין אוֹתוֹ כְּזַיִת מַצָּה. חוֹלֶה אוֹ זָקֵן שֶׁאֵינוֹ יָכוֹל לֶאֱכל שׁוֹרִין לוֹ רָקִיק בְּמַיִם וּמַאֲכִילִין אוֹתוֹ וְהוּא שֶׁלֹּא נִמּוֹחַ:
כסף משנה
10.
All are obligated to [fulfill the mitzvah to] eat matzah,1As mentioned above, the Sefer HaChinuch (mitzvah 10) notes that even though the Torah restricted an uncircumcised person or someone who is impure from bringing a Paschal sacrifice, they must partake of matzah on Pesach night. even women and slaves.2Though these individuals are usually relieved of the observance of mitzvot limited to a specific time, Pesachim 43b makes an exception in this case. Deuteronomy 16:3 states: "Do not eat chametz upon it... eat matzot for seven days," establishing an analogy between the two mitzvot. Since women are obligated to fulfill the prohibition against eating chametz (for they are liable for the observance of all the Torah's prohibitions), they must also fulfill the positive commandment of eating matzah. A minor [old enough to eat bread] should be trained in [the fulfillment of] mitzvot3From the Rambam's phraseology, we learn that the mitzvah of training one's children to fulfill mitzvot is incumbent upon the parents. Neither the Torah nor the Sages placed any responsibilities on the children themselves. Rather, the parents are charged with teaching their children to follow the Torah's guidelines (Kessef Mishneh). and be given an olive's size of matzah4the same measure given an adult. to eat. [For] a sick or elderly person who cannot eat,5a full כזית of matzah in any other fashion, we can soak a cake [of matzah] in water and feed it to him, provided it does not dissolve.6See Halachah 6 and commentary.

הלכה יא
מִדִּבְרֵי סוֹפְרִים שֶׁאֵין מַפְטִירִין אַחַר מַצָּה כְּלוּם וַאֲפִלּוּ קְלָיוֹת וֶאֱגוֹזִים וְכַיּוֹצֵא בָּהֶן. אֶלָּא אַף עַל פִּי שֶׁאָכַל מַצָּה וְאָכַל אַחֲרֶיהָ מַאֲכָלוֹת אֲחֵרוֹת וּפֵרוֹת וְכַיּוֹצֵא בָּהֶן חוֹזֵר וְאוֹכֵל כְּזַיִת מַצָּה בָּאַחֲרוֹנָה וּפוֹסֵק:
כסף משנה
11.
It is a Rabbinic ordinance that nothing at all is eaten after the matzah,1As explained in Halachah 8:9, the Rambam is referring to the afikoman, which was instituted in place of the Paschal sacrifice. not even roasted seeds, nuts, or the like.2The Mishnah (Pesachim 119b) states: "No afikoman is served after the Paschal sacrifice." In his commentary on the Mishnah, the Rambam defines afikoman as "fruits served as dessert after the meal, such as roasted seeds, figs, raisins, almonds, and the like." Rather, even though one ate matzah3to begin one's meal and to fulfill the mitzvah of eating matzah and afterwards, ate other foods, fruit, and the like,4in the course of the meal one returns and eats a second olive's size of matzah at the end [of the meal]5as the afikoman and ceases [eating].6so that the taste of the matzah will remain in one's mouth. See Halachah 8:9.

הלכה יב
אָסְרוּ חֲכָמִים לֶאֱכֹל מַצָּה בְּעֶרֶב הַפֶּסַח כְּדֵי שֶׁיִּהְיֶה הֶכֵּר לַאֲכִילָתָהּ בָּעֶרֶב. וּמִי שֶׁאָכַל מַצָּה בְּעֶרֶב הַפֶּסַח מַכִּין אוֹתוֹ מַכַּת מַרְדּוּת עַד שֶׁתֵּצֵא נַפְשׁוֹ. וְכֵן אָסוּר לֶאֱכֹל עֶרֶב הַפֶּסַח מִקֹּדֶם הַמִּנְחָה כִּמְעַט. כְּדֵי שֶׁיִּכָּנֵס לַאֲכִילַת מַצָּה בְּתַאֲוָה. אֲבָל אוֹכֵל הוּא מְעַט פֵּרוֹת אוֹ יְרָקוֹת וְלֹא יְמַלֵּא כְּרֵסוֹ מֵהֶן. וַחֲכָמִים הָרִאשׁוֹנִים הָיוּ מַרְעִיבִין עַצְמָן עֶרֶב הַפֶּסַח כְּדֵי לֶאֱכֹל מַצָּה בְּתַאֲוָה וְיִהְיוּ מַצּוֹת חֲבִיבוֹת עָלָיו. אֲבָל בִּשְׁאָר עַרְבֵי שַׁבְּתוֹת אוֹ עַרְבֵי יָמִים טוֹבִים אוֹכֵל וְהוֹלֵךְ עַד שֶׁתֶּחְשַׁךְ:
כסף משנה
12.
The Sages forbade a person from eating matzah1This applies only to matzah that is fit to be used at the Seder. However, matzah that is made with wine, oil, or honey may not be used to fulfill the mitzvah, and hence may be eaten at this time. (As mentioned above, such matzah is generally not eaten in the Ashkenazic community.) on Pesach eve,2the fourteenth of Nisan. Some authorities explain that this prohibition only applies from midday, the time when chametz becomes forbidden. However, the Rambam appears to consider the prohibition as applying during the entire day (Maggid Mishneh). in order for there to be a distinction between [partaking of it as food] and eating it on the evening [of the fifteen as a mitzvah.]3The Jerusalem Talmud (Pesachim 10:1) states that a person who eats matzah on the day before Pesach can be compared to a man who has relations with his betrothed in her father's house before the wedding. Whoever eats matzah on Pesach eve is given "stripes for rebellion"4מכת מרדות, the punishment given those who break a Rabbinic commandment. The Jerusalem Talmud (ibid.) explains that such a punishment is given to a man who acts immodestly with his betrothed. Hence, it is appropriate that a person who eats matzah on Pesach eve be given a similar penalty. until his soul expires.5This phrase has provoked much controversy among the commentators. The Tashbaytz (Vol. II, Responsum 51) states:
This is a wondrous statement... If the intention is that after he eats, he should be beaten... a Rabbinic prohibition will be punished more severely than a Torah prohibition... for such a penalty is not found with regard to a Torah prohibition.
Indeed, some commentaries advise striking this phrase from the text, maintaining that it was a later addition which was not made by the Rambam himself. Nevertheless, Rabbenu Manoach justifies this phrase, explaining that it refers to a situation where a person obstinately refuses to accept the prohibition. As long as he does not promise to obey the Sages' decree, the authorities must continue administering punishment.

Similarly, it is forbidden to eat6a meal with matzah (even matzah kneaded with wine, which is not included in the prohibition mentioned above) on Pesach evening from slightly before the time of Minchah,7The Sages defined this time as nine hours after the beginning of the day. (The time of Minchah is nine and a half hours after the beginning of the day.) in order that one will approach eating matzah with appetite. However, one may eat some fruit or vegetables,8or other similar foods that do not satiate one's appetite but should not fill up on them.9for then, one will not eat the matzah with relish.
The Sages of the former generations would starve themselves on Pesach eve10Pesachim 108a relates that Rav Sheshet would fast the entire day even though he was not a firstborn. so that they would eat matzah with appetite, and thus hold the mitzvot as dear. In contrast, on the eve of Sabbaths or other festivals,11The Rambam's statements require some explanation: In Hilchot Yom Tov 6:16, the Rambam states:
It is proper for a person not to dine on the day before a festival from the time of Minchah onward, as on the day before the Sabbath.
The latter phrase is a reference to Hilchot Shabbat 30:4, which states:
A person may eat and drink [on Friday] until nightfall. Nevertheless, as part of the honor given to the Shabbat, a person should refrain from scheduling a meal from the time of Minchah onward.
Thus, on the day before the Sabbath and other festivals, a person should not schedule an important meal. However, he may partake of a casual meal and continue eating. On Pesach, even the latter is forbidden.
one may continue eating until darkness.12at which time one is required to cease eating. However, a person who desires to continue eating may cover his food with a cloth, recite Kiddush, and return to his meal, as explained in Hilchot Shabbat 29:12.

זמנים הלכות חמץ ומצה פרק ו
Zemanim Hametz and Matza Chapter 6