Halacha
הלכה א
חַלוֹת אוֹ כִּכָּרִים שֶׁכְּנָסָן וְהָיוּ נוֹשְׁכוֹת זוֹ בְּזוֹ וְדַעְתּוֹ לְהַפְרִישָׁן אוֹ שֶׁאָפָה חַלָּה עַל גַּבֵּי חַלָּה בַּתַּנּוּר וַעֲדַיִן לֹא קָרְמוּ פָּנֶיהָ וְנָגַע טְבוּל יוֹם בְּאַחַת מֵהֶן לֹא פָּסַל אֶלָּא הַחַלָּה שֶׁנָּגַע בָּהּ. וְכֵן הַמַּיִם שֶׁהִרְתִּיחוּ וְנַעֲשׂוּ כְּקוּבָּה. וְהַגְּרִיסִין שֶׁהִרְתִּיחוּ רְתִיחָה רִאשׁוֹנָה. וְיַיִן חָדָשׁ וְאֹרֶז שֶׁהִרְתִּיחוּ. וְנָגַע טְבוּל יוֹם בָּרְתִיחָה אֵינוֹ חִבּוּר וְלֹא פָּסַל אֶלָּא הָרְתִיחָה בִּלְבַד. וּבִשְׁאָר כָּל הַטֻּמְאוֹת בֵּין קַלּוֹת בֵּין חֲמוּרוֹת הַכּל חִבּוּר. אֲבָל חַלּוֹת שֶׁהָיוּ נוֹשְׁכוֹת זוֹ בְּזוֹ וְאֵין דַּעְתּוֹ לְהַפְרִישׁ. אוֹ שֶׁאָפָה חַלָּה עַל גַּבֵּי חַלָּה וְנָשְׁכוּ וְקָרְמוּ בַּתַּנּוּר. וּרְתִיחַת הַמַּיִם שֶׁאֵינָהּ מְחֻלְחֶלֶת כְּקוּבָּה. וּרְתִיחַת הַגְּרִיסִין שְׁנִיָּה. וּרְתִיחַת יַיִן יָשָׁן. וּרְתִיחַת הַשֶּׁמֶן בֵּין יָשָׁן בֵּין חָדָשׁ. וּרְתִיחַת עֲדָשִׁים. הֲרֵי אֵלּוּ חִבּוּר בִּטְבוּל יוֹם וְאֵין צָרִיךְ לוֹמַר בְּכָל הַטֻּמְאוֹת:
כסף משנה
1.
The following rule applies when loaves or breads were inserted into an oven and were attached to each other - although one had the intent to separate them - or one baked one loaf over another in an oven and its surface did not yet harden. If a person who immersed that day touched one of them, he only disqualifies the loaf that he touched.Similarly, in the following instances, water was boiled and made large bubbles, groats were boiled for the first time, fresh wine began to ferment, or rice was boiled, if a person who immersed that day touched the bubbles, he disqualifies only the bubbles. With regard to other impurity, by contrast, whether lenient or stringent, everything is considered as joined.
If, however, loaves were attached to each other and the person did not intend to separate them; he baked one loaf over another and they became attached after the surfaces hardened in the oven; water bubbled and the bubbles were not empty as large bubbles are; groats boiled for a second time; aged wine fermented and produced bubbles; oil - whether fresh or aged - bubbled; lentils bubbled - all these situations are considered as joined even when touched by a person who immersed that day. Needless to say, this applies with regard to other impurities.
הלכה ב
בָּצֵק שֶׁיָּצָא בִּשְׁעַת אֲפִיָּה וְנִמְצָא בְּאֶמְצַע הַכִּכָּר כְּמוֹ מַסְמֵר יוֹצֵא. וְכֵן קְצָת הַבָּצֵק שֶׁנִּמְשַׁךְ וְנֶחְרַךְ בְּעֵת אֲפִיָּה וְהוּא הַנִּקְרָא חַרְחוּר. אִם הָיוּ פְּחוּתִים מִכְּאֶצְבַּע וְנָגַע טְבוּל יוֹם בָּהֶן פָּסַל כָּל הַכִּכָּר. וְכֵן אִם נָגַע בְּגַרְגֵר מֶלַח קָטָן שֶׁבַּכִּכָּר נִפְסַל כָּל הַכִּכָּר. וְאֵין צָרִיךְ לוֹמַר בְּכָל הַטֻּמְאוֹת. אֲבָל צְרוֹר שֶׁבַּכִּכָּר אוֹ תּוּרְמוּס וְגַרְגֵּר מֶלַח גָּדוֹל וְחַרְחוּר יֶתֶר מִכְּאֶצְבַּע שֶׁנָּגַע בָּהֶן אֲפִלּוּ אַב הַטֻּמְאָה הַכִּכָּר טָהוֹר וְאֵין צָרִיךְ לוֹמַר בִּטְבוּל יוֹם:
כסף משנה
2.
The following rules apply if dough is taken out at the time of baking and left to harden, so there is a projection like a nail in the midst of a loaf or the end of the dough is extended and becomes burnt while the loaf is baking; it is called a chirchor. If they were smaller than a fingerbreadth in size and a person who immersed that day touched them, he disqualified the entire loaf. Similarly, if such a person touched a small granule of salt in the loaf, he disqualified the entire loaf. Needless to say, these laws apply with regard to other impurities.If, however, there is a pebble in a loaf, a vetch bean, a large granule of salt, a chichor that is larger than a fingerbreadth, even if a primary source of impurity touches them, the loaf is pure. Needless to say, this applies with regard to a person who immersed that day.
הלכה ג
רָקִיק שֶׁנֶּחְרַךְ חֶצְיָהּ וְחֶצְיָהּ קַיָּם הֲרֵי זוֹ אֵינוֹ חִבּוּר. נֶחְרַךְ הָאֶמְצַע וְהַצְּדָדִין קַיָּמִין אֵינָן חִבּוּר זֶה לָזֶה אֲפִלּוּ בְּאַב הַטֻּמְאָה וְאֵין צָרִיךְ לוֹמַר בִּטְבוּל יוֹם. בְּשַׂר קֹדֶשׁ שֶׁקָּרַם עָלָיו הַמָּרָק וְנָגַע טְבוּל יוֹם בַּקִיפָה הַחֲתִיכוֹת מֻתָּרוֹת. נָגַע בַּחֲתִיכָה הַחֲתִיכָה וְכָל הָעוֹלִין עִמָּהּ חִבּוּר. וְכֵן בְּתַבְשִׁיל קִטְנִיּוֹת שֶׁקָּרַם עַל גַּבֵּי פְּרוּסוֹת. שֶׁמֶן שֶׁצָּף עַל גַּבֵּי יַיִן וְנָגַע טְבוּל יוֹם בַּשֶּׁמֶן לֹא פָּסַל אֶלָּא הַשֶּׁמֶן:
כסף משנה
3.
When half of a roll is burnt and half remains edible, the two are not considered as joined. If the center of a roll became burnt, but the sides remain edible, they are not considered as joined to each other. This applies even with regard to a primary source of impurity. Needless to say, this applies with regard to a person who immersed that day.If the sauce in which sacrificial meat was being cooked congealed around it and a person who immersed that day touched this gel, the meat is permitted. If he touched a piece of the meat, that piece and anything that ascends with it are considered joined. Similar laws apply if cooked legumes congeal on pieces of bread.
When oil is floating on wine and a person who immersed that day touches the oil, he disqualifies only the oil.
הלכה ד
יָרָק תְּרוּמָה וּבֵיצָה טְרוּפָה נְתוּנָה עַל גַּבָּיו וְנָגַע טְבוּל יוֹם בַּבֵּיצָה לֹא פָּסַל אֶלָּא קֶלַח שֶׁכְּנֶגְדוֹ. וְאִם הָיְתָה כְּמִין כּוֹבַע אֵינוֹ חִבּוּר:
כסף משנה
4.
When there is an egg that is stirred placed on a vegetable that is terumah and a person who immersed that day touches the egg, he disqualifies only the stalk of the vegetable below the place he touched. If the egg bubbled like a helmet, it is not considered as joined to the vegetable.הלכה ה
חוּט שֶׁל בֵּיצָה שֶׁקָּרַם עַל דָּפְנָהּ שֶׁל אִלְפָּס וְנָגַע בּוֹ טְבוּל יוֹם. מִן הַשָּׂפָה וּלְפָנִים חִבּוּר מִן הַשָּׂפָה וְלַחוּץ אֵינוֹ חִבּוּר. וְכֵן בְּקִטְנִיּוֹת שֶׁקָּרְמוּ עַל שְׂפַת הַקְּדֵרָה:
כסף משנה
5.
The following laws apply when a strand from an egg congealed on the wall of a frying pan and a person who immersed that day touched it. If he touched a portion of the egg that was on the rim or further inward, it is considered as joined to the food. If the portion he touched was beyond the rim and to the outside, the egg is not considered as joined. The same laws apply with regard to cooked legumes whose broth congeals on the rim of a pot.הלכה ו
חָבִית שֶׁנִּקְּבָה בֵּין מִשּׁוּלֶיהָ בֵּין מִצִּדֶּיהָ וְסָתַם טְבוּל יוֹם הַנֶּקֶב בְּיָדָיו נִפְסְלָה כֻּלָּהּ:
כסף משנה
6.
If there was a barrel that was perforated, whether from its base or from its side, and a person who immersed that day closed the hole with his hand, the contents of the entire barrel are disqualified.הלכה ז
הַמְעָרֶה מִכְּלִי לִכְלִי וְנָגַע טְבוּל יוֹם בַּקִּלּוּחַ מְשַׁעֲרִין זֶה שֶׁנָּגַע בּוֹ בְּאֶחָד וּמֵאָה. שֶׁתְּרוּמָה טְמֵאָה שֶׁנִּתְעָרְבָה בְּאֶחָד וּמֵאָה בָּטְלָה בְּמִעוּטָהּ כְּמוֹ שֶׁבֵּאַרְנוּ בְּהִלְכוֹת תְּרוּמוֹת:
כסף משנה
7.
When a person was pouring liquids from one container to another and a person who immersed that day touched the column of liquids, we estimate whether the liquids that he touched were less than a 101th portion of the entire amount. The rationale is that impure terumah that is mixed with 101 times its volume is considered insignificant because of its minimal size, as we explained in Hilchot Terumot.הלכה ח
טְבוּל יוֹם שֶׁהָיָה תּוֹרֵם אֶת הַבּוֹר וְנָפְלָה מִמֶּנּוּ חָבִית שֶׁל תְּרוּמָה וְשָׁקְעָה בְּבוֹר שֶׁל יַיִן וְנָגַע בַּיַּיִן שֶׁבַּבּוֹר. מִן הַשָּׂפָה וְלַחוּץ אֵינוֹ חִבּוּר מִן הַשָּׂפָה וּלְפָנִים חִבּוּר. וְאִם הָיָה הַבּוֹר פִּיטַס אֲפִלּוּ הָיָה כְּלִי גָּדוֹל שֶׁמַּחְזִיק מֵאָה כּוֹר כֻּלּוֹ חִבּוּר וְאִם נָגַע בְּמִקְצָת הַיַּיִן פָּסַל הַתְּרוּמָה שֶּׁבֶּחָבִית שֶׁבְּקַרְקַע הַכְּלִי:
כסף משנה
8.
The following laws apply when a person who had immersed that day was separating terumah from a cistern of wine. An open jug of wine that was terumah fell from his hand and became submerged in the cistern of wine. He sought to retrieve the jug and touched the jug of wine in the cistern. If his hand touched only from the rim of the jug and outward, the wine he touched is not considered as joined to the wine in the jug. If his hand extended beyond the rim of the jug inward, it is considered as joined.If the cistern was a giant container, even an immense tank that holds 100 kor, all of the wine is considered as joined. If a person who immersed that day touched some of the wine, he disqualifies even the terumah in a jug in the bottom of the large container.
הלכה ט
הַסּלֶת שֶׁל מְנָחוֹת וְהַלְּבוֹנָה וְהַקְּטֹרֶת וְהַגֶּחָלִים שֶׁנָּגַע טְבוּל יוֹם בְּמִקְצָתָן פָּסַל אֶת כֻּלָּן. בַּמֶּה דְּבָרִים אֲמוּרִים בְּגֶחָלִים שֶׁחוֹתֶה בְּמַחְתָּה בְּיוֹם הַכִּפּוּרִים. שֶׁהַמַּחְתָּה שֶׁחוֹתֶה בָּהּ נִכְנָס לַהֵיכָל. אֲבָל גֶּחָלִים שֶׁחוֹתֶה בְּכָל יוֹם כְּשֶׁהוּא מְעָרֶה בְּמַחְתָּה שֶׁל כֶּסֶף לְשֶׁל זָהָב אִם נִתְפַּזְּרוּ מִן הַגֶּחָלִים אֵין בָּהֶן קְדֻשָּׁה אֶלָּא מְכַבְּדָן לָאַמָּה:
כסף משנה
9.
When a person who immersed that day touches some of the flour for the meal offerings, frankincense, the incense offering, or coals, he disqualifies the entire amount that are held together in a container.To what does the above apply? To the coals that one collects in the firepan used on Yom Kippur, for the coals in that firepan are taken into the Sanctuary. It does not apply to the coals that are taken every day, for they do not posses holiness. This is evidenced by the fact that if some of the coals are scattered when he pours from the silver firepan to the golden firepan, they do not possess holiness and are swept into the drainage canal.
הלכה י
מִקְפָּה שֶׁל חֻלִּין אוֹ רָקִיק שֶׁל חֻלִּין וְשֶׁמֶן שֶׁל תְּרוּמָה צָף עַל גַּבֵּיהֶן וְנָגַע טְבוּל יוֹם בַּשֶּׁמֶן לֹא פָּסַל אֶלָּא הַשֶּׁמֶן בִּלְבַד. וְאִם חִבֵּץ כָּל מָקוֹם שֶׁהָלַךְ בּוֹ הַשֶּׁמֶן פָּסַל:
כסף משנה
10.
When oil that is terumah is resting upon a thick stew or an unbaked cake of ordinary food and a person who immersed that day touched the oil, he disqualifies only the oil. If he mixed the oil with the stew or the dough, any place the oil reached is disqualified.הלכה יא
יָרָק שֶׁל חֻלִּין שֶׁבִּשְּׁלוֹ בְּשֶׁמֶן שֶׁל תְּרוּמָה וְנָגַע בּוֹ טְבוּל יוֹם לֹא פָּסַל אֶלָּא מְקוֹם מַגָּעוֹ:
כסף משנה
11.
If one cooked a vegetable that was ordinary food with terumah oil and a person who immersed that day touched it, he disqualifies only the place he touches.הלכה יב
הַמִּקְפָּה שֶׁל תְּרוּמָה וְהַשּׁוּם וְהַשֶּׁמֶן שֶׁל חֻלִּין שֶׁנָּגַע טְבוּל יוֹם בְּמִקְצָתָן פָּסַל אֶת כֻּלָּן:
כסף משנה
12.
When there is a thick stew that is terumah and garlic and oil that are ordinary food and a person who immersed that day touched part of the stew, the oil, or the garlic, he disqualifies everything.הלכה יג
הַמִּקְפָּה שֶׁל חֻלִּין וְהַשֶּׁמֶן שֶׁל תְּרוּמָה שֶׁנָּגַע טְבוּל יוֹם בְּמִקְצָתָן לֹא פָּסַל אֶלָּא מְקוֹם מַגָּעוֹ. אִם הָיָה הַשּׁוּם מְרֻבֶּה הוֹלְכִין אַחַר הָרֹב. אֵימָתַי בִּזְמַן שֶׁהוּא גּוּשׁ בִּקְעָרָה אֲבָל אִם הָיָה מְפֻזָּר בִּמְדוֹכָה וְנָגַע בְּמִקְצָתוֹ לֹא פָּסַל אֶלָּא מְקוֹם מַגָּעוֹ מִפְּנֵי שֶׁהוּא רוֹצֶה בְּפִזּוּרוֹ. וּשְׁאָר כָּל הַנִּדּוֹכִין שֶׁדַּרְכָּן לְדוּכָן בְּמַשְׁקִין כְּגוֹן הַשּׁוּם בְּשֶׁמֶן אִם דָּכָן שֶׁלֹּא בְּמַשְׁקִין וְקִבְּצָן אַף עַל פִּי שֶׁהֵן גּוּשׁ בִּקְעָרָה וְנָגַע בָּהֶן לֹא פָּסַל אֶלָּא מְקוֹם מַגָּעוֹ. שֶׁהֲרֵי הֵם כְּעִגּוּל שֶׁל דְּבֵלָה שֶׁאִם נִטְמָא מִקְצָתוֹ לֹא נִטְמָא כֻּלּוֹ:
כסף משנה
13.
If the stew was ordinary food and the garlic and oil were terumah and a person who immersed that day touched a portion, he disqualifies only the place he touched. If there was a majority of garlic, the ruling depends on the majority.When does the above apply? When the garlic is a mass in a bowl. If, however, it was spread out in a pestle and one touched a portion of it, he disqualifies only the portion that he touched. It is not considered as joined, because he desires that it be dispersed.
With regard to other condiments that are crushed into liquids like garlic is crushed into oil, if they were crushed without liquids and collected, even though they are like a single entity in a bowl, he disqualifies only the place where he touches. For the condiments are considered like a roll of dried figs, in which instance, the ruling is that if a portion of it contracted impurity, the entire roll does not contract impurity.
הלכה יד
עִסָּה שֶׁקָּרָא שֵׁם חַלָּתָהּ בִּצְפוֹנָהּ אוֹ בִּדְרוֹמָהּ. וְכֵן הַקִּשּׁוּת שֶׁקָּרָא שֵׁם תְּרוּמָה בִּצְפוֹנָהּ אוֹ בִּדְרוֹמָהּ הֲרֵי זֶה חִבּוּר. וְאִם נָגַע טְבוּל יוֹם בְּמִקְצָת הָעִסָּה נִפְסְלָה הַחַלָּה. נִטְּלָה חַלָּתָהּ מִתּוֹכָהּ וְחָזְרָה לְתוֹכָהּ אֵינוֹ חִבּוּר:
כסף משנה
14.
When a portion in the northern or southern part of a dough is designated as challah and similarly, when a portion in the northern or southern part of a zucchini was designated as terumah, the terumah or the challah are considered as joined to the entire dough or zucchini. Thus if a person who immersed that day touched part of the dough, the challah is disqualified. If the challah was removed from the remainder of the dough and then returned to it, it is not considered as joined.הלכה טו
עִסָּה שֶׁנִּדְמְעָה אוֹ שֶׁנִּתְחַמְּצָה בִּשְׂאוֹר שֶׁל תְּרוּמָה אֵינָהּ נִפְסֶלֶת בִּטְבוּל יוֹם:
כסף משנה
15.
When a dough that was ordinary food became mixed with terumah or became leavened with yeast that is terumah, it is not disqualified when touched by a person who immersed that day.הלכה טז
עִסָּה שֶׁהֻכְשְׁרָה בְּמַשְׁקִין וְנִלּוֹשָׁה בְּמֵי פֵּרוֹת וְנָגַע בָּהּ טְבוּל יוֹם לֹא פָּסַל אֶלָּא מְקוֹם מַגָּעוֹ בִּלְבַד:
כסף משנה
16.
If the grains from which the flour used to make a dough had been exposed to liquids and thus made susceptible to ritual impurity and then the flour was kneaded with fruit juice, should a person who immersed that day touch the dough, he disqualifies only the place he touches.הלכה יז
מַעֲשֵׂר רִאשׁוֹן שֶׁהֻכְשַׁר וְנָגַע בּוֹ טְבוּל יוֹם אוֹ יָדַיִם מְסֹאָבוֹת מַפְרִישִׁין מִמֶּנּוּ תְּרוּמַת מַעֲשֵׂר בְּטָהֳרָה. מִפְּנֵי שֶׁמַּעֲשֵׂר רִאשׁוֹן כְּחֻלִּין וּטְבוּל יוֹם וְיָדַיִם מְסֹאָבוֹת אֵינָם פּוֹסְלִין אֶת הַחֻלִּין שֶׁהַשְּׁלִישִׁי בְּחֻלִּין טָהוֹר כְּמוֹ שֶׁבֵּאַרְנוּ. וְכֵן הָאִשָּׁה שֶׁהִיא טְבוּלַת יוֹם לָשָׁה אֶת הָעִסָּה וְקוֹצָה לָהּ חַלָּה וּמַפְרִישָׁתָהּ וּמַנִּיחָתָהּ בְּכֵלִים וְנוֹתַנְתּוֹ עִם שְׁאָר הָעִסָּה כְּאַחַת. וּמַקֶּפֶת עַל הַכּל כְּדֵי לִתְרֹם מִן הַמֻּקָּף וְאַחַר כָּךְ קוֹרְאָה לָהּ שֵׁם וְאוֹמֶרֶת הֲרֵי זוֹ חַלָּה. וּמִשֶּׁתִּקְרָא לָהּ שֵׁם לֹא תִּגַּע בָּהּ שֶׁלֹּא תִּפְסְלֶנָּהּ. וְכָךְ הִיא עוֹשָׂה אִם לָשָׁה בַּעֲרֵבָה שֶׁהִיא טְבוּלַת יוֹם:
כסף משנה
17.
When food that is the first tithe was exposed to liquids and thus made susceptible to ritual impurity and a person who immersed that day or one with impure hands touched that food, terumat ma'aser should be separated from it in a state of purity. The rationale is that the first tithe is considered as ordinary food and neither a person who immersed that day nor one whose hands are impure disqualifies ordinary food, for ordinary food that is a tertiary derivative of impurity is pure, as we explained.Similarly, a woman who immersed that day may knead dough, cut off a portion as challah, set it aside, place it in a container, put it together with the other dough in one container so that they are considered as one entity, so that it can be separated while the two are one entity. Afterwards, she designates it as challah, saying "This is challah." Once she designates it, she should not touch it, lest she disqualify it. She should follow a similar pattern if she was kneading in a kneading trough that had been immersed that day.
הלכה יח
לָגִין שֶׁהוּא טְבוּל יוֹם שֶׁמִּלְּאָהוּ מֵחָבִית מַעֲשֵׂר שֶׁלֹּא נִטְּלָה תְּרוּמָתוֹ וְאָמַר הֲרֵי זוֹ תְּרוּמַת מַעֲשֵׂר עַל מַה שֶּׁבֶּחָבִית אַחַר שֶׁתֶּחֱשַׁךְ הֲרֵי זוֹ תְּרוּמָה טְהוֹרָה. לְפִי שֶׁאֵינָהּ נַעֲשֵׂית תְּרוּמַת מַעֲשֵׂר עַד שֶׁתֶּחֱשַׁךְ כְּפִי תְּנָאוֹ וְאַחַר שֶׁתֶּחֱשַׁךְ יַעֲרִיב שִׁמְשׁוֹ שֶׁל לָגִין וְיִטְהַר. נִשְׁבְּרָה הֶחָבִית קֹדֶם שֶׁתֶּחֱשַׁךְ הַלָּגִין בְּטִבְלוֹ. נִשְׁבַּר הַלָּגִין הֶחָבִית בְּטִבְלָהּ:
כסף משנה
18.
When a person fills bottles that were immersed that day from a jug of wine that is from the tithes from which terumat ma'aser had not been separated and says: "May this be terumat ma'aser for the wine in the jug at nightfall," it is pure terumah. The rationale is that the separated wine does not become terumat ma'aser until nightfall, as he stipulated. And at night, the day in which they were in an intermediate state will have ended for the bottles and they will become pure.If the jug from which the wine was taken breaks before nightfall, the wine in the bottles is considered as tevel. If the bottles break, the wine in the jug is considered as tevel.
הלכה יט
טְבוּל יוֹם מִטֻּמְאַת מֵת וּמִבְּעִילַת נִדָּה עוֹשֶׂה בְּבֵית הַבַּד. וְכֵן שְׁאָר הַטְּמֵאִים שֶׁטָּבְלוּ עוֹשִׂין בְּטָהֳרוֹת. חוּץ מִזָּב וְזָבָה בַּשְּׁבִיעִי שֶׁלָּהֶן שֶׁאַף עַל פִּי שֶׁטָּבְלוּ לֹא יַעֲשׂוּ בְּבֵית הַבַּד וְלֹא יִתְעַסְּקוּ בְּטָהֳרוֹת שֶׁמָּא יִרְאוּ וְנִמְצְאוּ טְמֵאִים לְמַפְרֵעַ שֶׁהֲרֵי סוֹתְרִין הַכּל כְּמוֹ שֶׁבֵּאַרְנוּ:
כסף משנה
19.
A person who immersed after purifying himself from the impurity associated with a human corpse or the impurity that results from relations with a nidah may work in an olive press.Similarly, other impure people who immersed themselves to regain purity may work with ordinary food that is pure with the exception of a zav and a zavah on their seventh day. Even though these individuals immersed themselves, they should not work in an olive press or become involved with pure foods lest they experience a discharge. In such an instance, they are considered impure retroactively, for the discharge disqualifies all the seven pure days, as we explained.