Halacha
הלכה א
כָּל הָאֳכָלִין הַגְּדֵלִין מִן הַקַּרְקַע אֵינָן מְקַבְּלִין טֻמְאָה עַד שֶׁיֵּעָקְרוּ. אֲבָל כָּל זְמַן שֶׁהֵן מְחֻבָּרִין אֲפִלּוּ כְּשֹׁרֶשׁ קָטָן שֶׁיְּכוֹלִין לִחְיוֹת מִמֶּנּוּ אֵינָן מְקַבְּלִין טֻמְאָה:
כסף משנה
1.
All foods that grow from the earth are not susceptible to ritual impurity until they are uprooted from the ground. As long as they are connected to the earth - even by a small root, as long as they can sustain themselves from it - they are not susceptible to impurity.הלכה ב
יִחוּר שֶׁל תְּאֵנָה שֶׁנִּפְשַׁח וּמְעֹרֶה בִּקְלִפָּה שֶׁאֵינוֹ יָכוֹל לִחְיוֹת מִמֶּנָּה כָּל הָאֳכָלִין שֶׁבּוֹ מִתְטַמְּאִין. וְיֵשׁ בַּדָּבָר סָפֵק אִם הָיָה שְׁאָר הָאִילָן כְּמוֹ יָד לְזֶה הַיִּחוּר שֶׁנִּשְׁבַּר אוֹ לָאו:
כסף משנה
2.
When a branch of a fig tree was broken off, yet it is still connected by its bark, but it cannot sustain itself from it, all the fruit on it are susceptible to ritual impurity. There is an unresolved doubt with regard to this matter: Is the remainder of the tree considered as a handle to this broken branch or not?הלכה ג
יְרָקוֹת שֶׁיָּבְשׁוּ בְּאִבֵּיהֶן כְּגוֹן כְּרוּב וּדְלַעַת שֶׁיָּבְשׁוּ בְּאִבֵּיהֶן אֵינָן מִתְטַמְּאִין טֻמְאַת אֳכָלִין. לִקְּטָן לְיַבְּשָׁן הֲרֵי הֵן אֳכָלִין כְּשֶׁהָיוּ עַד שֶׁיִּיבְשׁוּ וְיֵעָשׂוּ כְּעֵץ:
כסף משנה
3.
When vegetables become dried out while budding, e.g., cabbage or squash that becomes dried out while budding, they are not susceptible to the impurity associated with foods. If produce was harvested with the intent of it being dried, it is considered as food until it becomes totally dry and hard like wood.הלכה ד
אִילָן שֶׁנִּפְשַׁח וּבוֹ פֵּרוֹת הֲרֵי הֵן כִּתְלוּשִׁין. וְכֵן אִם יָבַשׁ הָאִילָן וּבוֹ פֵּרוֹת הֲרֵי הֵן כִּתְלוּשִׁין:
כסף משנה
4.
When the branches of a tree that contained fruit were broken off, the fruit is considered as having been harvested. Similarly, if a tree containing fruit dried out, the fruit is considered as having been harvested.הלכה ה
תְּאֵנִים שֶׁיָּבְשׁוּ בְּאִבֵּיהֶן מִטַּמְּאוֹת טֻמְאַת אֳכָלִין בִּמְקוֹמָן:
כסף משנה
5.
When figs dry out when budding, they contract impurity in their place.הלכה ו
כָּל הָאֳכָלִין שֶׁהֵן מִבַּעֲלֵי חַיִּים אֵינָן מְקַבְּלִין טֻמְאָה עַד שֶׁיָּמוּתוּ. שָׁחַט בְּהֵמָה חַיָּה וְעוֹף אַף עַל פִּי שֶׁעֲדַיִן הֵן מְפַרְכְּסִין מְקַבְּלִין טֻמְאָה. וְדָגִים מֵאֵימָתַי מְקַבְּלִין טֻמְאָה מִשֶּׁיָּמוּתוּ. נוֹלַד בָּהֶן טְרֵפָה וְנִתְטַמְּאוּ כְּשֶׁהֵן מִתְנַדְנְדִין הֲרֵי יֵשׁ בַּדָּבָר סָפֵק אִם הֵן חֲשׁוּבִין כְּמֵתִים הוֹאִיל וְנִטְרְפוּ אוֹ אֵינָן מְקַבְּלִין טֻמְאָה עַד שֶׁיִּדְמוּ כְּאֶבֶן וְלֹא יִתְנַדְנְדוּ. הָאֵיבָר אוֹ הַבָּשָׂר הַמְדֻלְדָּלִין בִּבְהֵמָה אוֹ חַיָּה שֶׁאֵינָן יְכוֹלִין לִחְיוֹת אִם הֻכְשְׁרוּ מְקַבְּלִין טֻמְאָה בִּמְקוֹמָן מִפְּנֵי שֶׁהֵן חֲשׁוּבִין כְּאֹכֶל שֶׁפֵּרַשׁ. נִשְׁחֲטָה הַבְּהֵמָה הֻכְשְׁרוּ בִּשְׁחִיטָה. שֶׁהַבְּהֵמָה כֻּלָּהּ כְּמוֹ יָד לְאֵיבָר זֶה וְיָד שֶׁהֻכְשַׁר הֻכְשַׁר הָאֵיבָר כֻּלּוֹ כְּמוֹ שֶׁיִּתְבָּאֵר. וְיֵשׁ בַּדָּבָר סָפֵק אִם תִּהְיֶה הַבְּהֵמָה בְּחַיֶּיהָ כְּמוֹ יָד לָאֵיבָר אוֹ בָּשָׂר הַמְדֻלְדָּלִין בָּהּ:
כסף משנה
6.
All foods that come from living animals are not susceptible to ritual impurity until the animals die. If one slaughtered a domesticated animal, wild animal, or fowl, even though it is still in its death throes, it is susceptible to ritual impurity.When do fish contract impurity? When they die. If a factor arose that caused a fish to be considered as tereifah and it contracted impurity when it is in its their death throes, there is an unresolved question: Is it considered as if it had died, because it already became tereifah? Or is it not susceptible to ritual impurity until it becomes inanimate like stone and does not move?
If a limb or meat that was loosely hanging from a domesticated or wild animal and could not rejuvenate itself was made fit to contract impurity, it is susceptible to impurity even when in its place attached to the animal, because it is already considered as food that has been separated. If the animal was slaughtered, the slaughter makes it fit to contract impurity, because the entire animal is considered as a "handle," to this limb. And when a "handle" is made susceptible to ritual impurity, the entire organ becomes susceptible, as will be explained. There is an unresolved question if an animal can become a "handle" to a loosely hanging limb or flesh in the animal's lifetime.
הלכה ז
הַשּׁוֹחֵט בְּהֵמָה חַיָּה וְעוֹף הֻכְשַׁר כָּל הַבָּשָׂר בַּדָּם שֶׁיָּצָא בַּשְּׁחִיטָה. לְפִיכָךְ אִם לֹא יָצָא מֵהֶן דָּם בַּשְּׁחִיטָה הֲרֵי כָּל בְּשָׂרָן צָרִיךְ הֶכְשֵׁר כְּכָל הָאֳכָלִין שֶׁלֹּא הֻכְשְׁרוּ:
כסף משנה
7.
When one slaughters a domesticated animal, wild animal, or fowl, all of its meat becomes susceptible to ritual impurity because of the blood that emerges at the time of ritual slaughter. Therefore, if no blood emerges at the time of ritual slaughter, all of the meat must be made susceptible to ritual impurity like all other foods that were not yet made susceptible to impurity.הלכה ח
אֳכָלִין שֶׁהֻכְשְׁרוּ כְּשֶׁהֵן מְחֻבָּרִין לַקַּרְקַע אוֹ שֶׁהֻכְשְׁרוּ בְּמַיִם הַמְחֻבָּרִים שֶׁבַּקַּרְקַע אֵינוֹ הֶכְשֵׁר עַד שֶׁיֻּכְשְׁרוּ אַחַר שֶׁנֶּעֶקְרוּ בַּמַּיִם הַתְּלוּשִׁין מִן הַקַּרְקַע אוֹ בִּשְׁאָר מַשְׁקִין שֶׁנֶּאֱמַר (ויקרא יא לד) "בְכָל כְּלִי" אֵינוֹ מַכְשִׁיר עַד שֶׁיִּתָּלֵשׁ מִן הַקַּרְקַע כְּעֵין הַמַּיִם שֶׁבַּכֵּלִים. שָׁאַב הַמַּיִם בִּכְלִי וּנְתָנָן בַּקַּרְקַע אֵינָן מַכְשִׁירִין:
כסף משנה
8.
When foods are made susceptible to impurity while they are attached to the earth or they were made susceptible with water that was attached to the ground, they are not susceptible to impurity. They receive this status only after coming in contact with water that is not in contact with the earth or with other liquids after the produce has been detached from the earth, as implied by Leviticus 11:34: "in any container." It can be inferred that a liquid does not make food susceptible to impurity unless it was lifted from the ground, like water in a container. If one drew water with a container and then poured it on the ground, it does not make food susceptible to impurity.הלכה ט
קִּשּׁוּת שֶׁנְּטָעָהּ בֶּעָצִיץ וְהִגְדִּילָה אַף עַל פִּי שֶׁיָּצָאת חוּץ לֶעָצִיץ אֵינָהּ מְקַבֶּלֶת טֻמְאָה. וְעָצִיץ שֶׁהוּא נָקוּב כְּדֵי שֶׁיֵּצֵא בּוֹ שֹׁרֶשׁ קָטָן הֲרֵי הוּא כְּאֶרֶץ וְהַנָּטוּעַ בּוֹ אֵינוֹ מְקַבֵּל טֻמְאָה. וְכֵן אִם הָיוּ בּוֹ מַיִם אֵינָן מַכְשִׁירִין:
כסף משנה
9.
When a zucchini was planted in a flowerpot and it grew, even though portions of it emerged outside the flowerpot, it is not susceptible to ritual impurity. The rationale is that when a flowerpot has a hole through which a small root can protrude, produce growing in it is considered as attached to the earth and anything planted in it is not susceptible to ritual impurity. Similarly, if there was water in it, the water does not make produce susceptible to impurity.הלכה י
עָצִיץ שֶׁאֵינוֹ נָקוּב הֲרֵי הַנָּטוּעַ בּוֹ מְקַבֵּל טֻמְאָה. וְאִם הָיוּ מַיִם בְּתוֹכוֹ מַכְשִׁירִין:
כסף משנה
10.
When a flowerpot does not have a hole, anything growing in it is susceptible to ritual impurity. If there is water in it, that water makes produce susceptible to impurity.הלכה יא
כְּלֵי גְּלָלִים וּכְלֵי אֲדָמָה שֶׁהַשָּׁרָשִׁים יְכוֹלִין לִבְקֹעַ בָּהֶן וְלָצֵאת אֵינָן מַכְשִׁירִין אֶת הַזְּרָעִים. וְאַף עַל פִּי שֶׁאֵינָן נְקוּבִין הֲרֵי הֵן כִּנְקוּבִין:
כסף משנה
11.
Vessels made from animal turds or earth from which roots can break through and protrude do not cause plants to become susceptible to impurity. Even though they do not have a hole, they are considered as if they have a hole.הלכה יב
עָצִיץ שֶׁמִּלְאָהוּ עָפָר עַד שְׂפָתוֹ אֵינוֹ חָשׁוּב כְּלִי אֶלָּא הֲרֵי הוּא כְּטַבְלָא שֶׁאֵין לָהּ שָׂפָה שֶׁאֵינוֹ כְּלִי קִבּוּל:
כסף משנה
12.
When a flowerpot was filled with earth until its edge, it is no longer considered as a container. Instead, it is considered as a flat surface that does not have an edge, for it is no longer a receptacle.הלכה יג
מַשְׁקִין טְמֵאִין שֶׁנָּפְלוּ עַל הָאֳכָלִין נִטְמְאוּ אַף עַל פִּי שֶׁנָּפְלוּ שֶׁלֹּא בִּרְצוֹן הַבְּעָלִים. שֶׁהֲרֵי הַטֻּמְאָה וְהַהֶכְשֵׁר בָּאִין כְּאַחַת. וְהוּא שֶׁלֹּא יִהְיוּ בַּקַּרְקַע:
כסף משנה
13.
When impure liquids fall on foods, the foods become impure even though they fell contrary to the desire of the owner. The rationale is that the food's contraction of impurity occurs at the same time as it became susceptible to impurity. This applies provided the liquids are not on the earth.הלכה יד
כָּל אֹכֶל שֶׁנִּפְסַד וְנִסְרַח עַד שֶׁאֵינוֹ רָאוּי לְמַאֲכַל אָדָם אֵינוֹ מְקַבֵּל טֻמְאָה. וְכֵן מַשְׁקֶה שֶׁנִּסְרַח וְנִפְסַד וְאֵינוֹ רָאוּי לִשְׁתִיַּת אָדָם אֵינוֹ מְקַבֵּל טֻמְאָה כְּדֶרֶךְ שֶׁאֵינוֹ מַכְשִׁיר שֶׁנֶּאֱמַר (ויקרא יא לד) "אֲשֶׁר יִשָּׁתֶה":
כסף משנה
14.
Whenever food has spoiled and rotted to the point that it is no longer fit for human consumption, it is not susceptible to ritual impurity. Similarly, a liquid that has spoiled and become foul to the point that it is no longer fit for human consumption is not susceptible to ritual impurity, just as it does not make foods susceptible to ritual impurity, as implied by Leviticus 11:34: "which he shall drink."הלכה טו
הָעוֹר שֶׁשְּׁלָקוֹ וְהַשִּׁלְיָא שֶׁחָשַׁב עָלֶיהָ לַאֲכִילָה מִתְטַמְּאִין טֻמְאַת אֳכָלִים בִּפְנֵי עַצְמָן:
כסף משנה
15.
When one cooked an animal's hide or thought of partaking of a placenta, they contract ritual impurity as an independent entity.הלכה טז
עוֹר הַחֲמוֹר שֶׁשְּׁלָקוֹ הֲרֵי זֶה סָפֵק אִם מִתְטַמֵּא טֻמְאַת אֳכָלִים בִּפְנֵי עַצְמוֹ מִפְּנֵי שֶׁשְּׁלָקוֹ אוֹ אֵינוֹ מִתְטַמֵּא מִפְּנֵי שֶׁהוּא מָאוּס הַרְבֵּה:
כסף משנה
16.
When one cooks the hide of a donkey, there is an unresolved question whether it contracts ritual impurity as an independent entity, because it was cooked or it does not contract impurity, because it is very disgusting.הלכה יז
חִטִּים שֶׁבִּגְלָלֵי בָּקָר וּשְׂעוֹרִים שֶׁבִּגְלָלֵי הַבְּהֵמָה שֶׁלִּקְּטָן אֵין מְקַבְּלִין טֻמְאָה. וְאִם חָשַׁב עֲלֵיהֶן לַאֲכִילָה מִתְטַמְּאוֹת טֻמְאַת אֳכָלִין:
כסף משנה
17.
Kernels of wheat that are found in cattle turds or barley that is found in animal turds that were collected are not susceptible to ritual impurity. If one thought of partaking of them, they contract the ritual impurity associated with foods.הלכה יח
כָּל אֹכֶל שֶׁנִּטְמָא וְאַחַר שֶׁנִּטְמָא נִפְסַל וְנִסְרַח. אִם נִפְסַל מִלֶּאֱכל הַכֶּלֶב אוֹ שֶׁיָּבַשׁ כְּחֶרֶשׂ הֲרֵי זֶה טָהוֹר. וְאִם נִפְסַל מִלֶּאֱכל אָדָם וַעֲדַיִן הוּא רָאוּי לְכֶלֶב הֲרֵי זֶה טָמֵא כְּשֶׁהָיָה. וְכָל הָאֳכָלִין שֶׁנִּטְמְאוּ אֵין לָהֶן טָהֳרָה בְּמִקְוֶה:
כסף משנה
18.
When food became impure and after it became impure, it spoiled and rotted, if it became unfit for a dog to eat or it became dry like a shard, it is pure. If it became unfit for human consumption, but it is still fit for a dog, it remains impure as it was beforehand.Whenever food becomes impure, it cannot regain purity by being immersed in a mikveh.
הלכה יט
זְרָעִים טְמֵאִים שֶׁזְּרָעָם הֲרֵי הַצּוֹמֵחַ מֵהֶן טָהוֹר. וַאֲפִלּוּ בְּדָבָר שֶׁאֵין זַרְעוֹ כָּלֶה. וְהוּא שֶׁהִשְׁרִישׁוּ. אֲבָל קֹדֶם הַשְׁרָשָׁה הֲרֵי הֵן בְּטֻמְאָתָן אֲפִלּוּ בְּדָבָר שֶׁזַּרְעוֹ כָּלֶה:
כסף משנה
19.
When one sows impure seeds, the plant that grows from them is pure, even if it is an entity whose seed does not decompose. The above applies provided the seeds sprout roots. If, however, they do not sprout roots, they remain impure even if the seed decomposes.הלכה כ
אֳכָלִין שֶׁמְּחֻבָּרִין לְכֵלִים בָּטְלוּ מִתּוֹרַת אֹכֶל. וְאִם נִטְמָא הַכְּלִי הֲרֵי הֵן מִתְטַמְּאִין בְּטֻמְאַת הַכְּלִי הוֹאִיל וְהֵן מְשַׁמְּשִׁין תַּשְׁמִישׁ עֵץ הֲרֵי הֵן כְּעֵץ:
כסף משנה
20.
When food is attached to a utensil, it is no longer considered as food. If the utensil becomes impure, it contracts the impurity of the utensil. Since the food serves as wood, it is considered as wood.הלכה כא
כָּל מַשְׁקֶה שֶׁנִּטְמָא וְאַחַר שֶׁנִּטְמָא נִפְסַד וְנִסְרַח הֲרֵי זֶה בְּטֻמְאָתוֹ לְעוֹלָם שֶׁאֵין הַמַּשְׁקֶה יוֹצֵא עַל יְדֵי הַכֶּלֶב לְעוֹלָם. וְאֵין לְמַשְׁקֶה שֶׁנִּטְמָא טָהֳרָה חוּץ מִן הַמַּיִם בִּלְבַד שֶׁאִם הִטְבִּיל מַיִם טְמֵאִים בְּמִקְוֶה כֵּיוָן שֶׁצָּפוּ מֵי מִקְוֶה עֲלֵיהֶן טָהֲרוּ. וּמַטְבִּילִין חַמִּין בְּצוֹנֵן וְצוֹנֵן בְּחַמִּין וְרָעִים בְּיָפִים וְיָפִים בְּרָעִים:
כסף משנה
21.
Whenever a liquid contracts impurity and afterwards spoils and becomes foul, it remains impure forever. For the impurity of a liquid never departs, even if it becomes unfit for a dog to drink. Liquid that becomes impure can never regain purity. The only exception is water, i.e., if one immersed impure water in a mikveh, when the water of the mikveh covers the impure water, it regains purity.Hot impure water can be immersed in a cold mikveh. Similarly, cold water can be immersed in hot water, foul water can be immersed in pleasant water, and pleasant water in foul water.
הלכה כב
מַקֵּל שֶׁהִיא מְלֵאָה מַשְׁקִין טְמֵאִים וְהִטְבִּיל מִקְּצָתָהּ בְּמִקְוֶה לֹא טָהֲרוּ הַמַּיִם שֶׁעַל מִקְּצָתָהּ עַד שֶׁיִּטְבּל אֶת כֻּלָּהּ:
כסף משנה
22.
When a staff was thoroughly wet with impure liquids, if a portion of it was immersed, the water on the other portion is not purified until it is immersed in its entirety.הלכה כג
שֶׁלֶג שֶׁנִּטְמָא וְהִשִּׁיק מִקְצָתוֹ לְמֵי מִקְוֶה הוֹאִיל וְטָהַר מִקְצָתוֹ טָהַר כֻּלּוֹ:
כסף משנה
23.
When snow becomes impure and a portion of it is joined to the waters of a mikveh, since a portion became pure, it becomes pure in its entirety.הלכה כד
הַתֶּמֶד הַטָּמֵא בֵּין שֶׁנִּטְמָא אַחַר שֶׁתִּמְדּוֹ בֵּין שֶׁתִּמְדּוֹ בְּמַיִם טְמֵאִים עַד שֶׁלֹּא הֶחְמִיץ מַשִּׁיקוֹ בְּמִקְוֶה וְיִטְהַר שֶׁהֲרֵי הוּא כְּמַיִם. מִשֶּׁהֶחְמִיץ הֲרֵי הוּא כְּיַיִן וְאֵין לוֹ טָהֳרָה בְּמִקְוֶה:
כסף משנה
24.
Temed that became impure - whether it became impure after the water was mixed with the grape dregs or whether the grape dregs were mixed with impure water - until it becomes vinegary, it can be brought into contact with a mikveh and purified, for it is like water. Once it becomes vinegary, it's like wine and it cannot be purified in a mikveh.הלכה כה
קְדֵרָה שֶׁמִּלְאָהּ מַשְׁקִין כְּגוֹן דְּבַשׁ וְיַיִן וְכַיּוֹצֵא בָּהֶן וּנְתוּנָה בְּתוֹךְ הַמִּקְוֶה וּפָשַׁט הָרִאשׁוֹן לְטֻמְאָה אֶת יָדוֹ וְנָגַע בָּהּ הֲרֵי זֶה מְטַמֵּא אֶת הַמַּשְׁקִין אַף עַל פִּי שֶׁהִיא בְּתוֹךְ הַמִּקְוֶה וְנִטְמֵאת הַקְּדֵרָה מֵחֲמַת הַמַּשְׁקִין שֶׁבְּתוֹכָהּ אַף עַל פִּי שֶׁהִיא בְּתוֹךְ הַמִּקְוֶה. הָיְתָה מְלֵאָה מַיִם הַקְּדֵרָה טְהוֹרָה שֶׁאֵין הָרִאשׁוֹן מְטַמֵּא כְּלִי חֶרֶס לְעוֹלָם וְאֵין הַמַּיִם שֶׁבְּתוֹכָהּ טְמֵאִים מִפְּנֵי שֶׁהֵן מְעֹרָבִים בְּמֵי הַמִּקְוֶה. פָּשַׁט אַב הַטֻּמְאָה אֶת יָדוֹ וְנָגַע בָּהּ נִטְמֵאת הַקְּדֵרָה שֶׁאֵין הַמִּקְוֶה מְטַהֵר כְּלֵי חֶרֶס:
כסף משנה
25.
When a pot was filled with liquids, e.g., honey, wine, or the like, and placed in a mikveh and then a person who was a primary derivative of impurity extended his hand outward and touched the liquids, the liquids become impure even though they are in the mikveh. And the pot contracts impurity from the liquids in it, even though it is in the mikveh.If, by contrast, the pot contained water, the pot is pure, because a derivative of impurity never imparts impurity to an earthenware container. Nor does the water it contains contract impurity, for it is mixed with the water of the mikveh. If, however, a person who is considered a source of impurity extended his hand and touched it, the pot becomes impure, for a mikveh does not impart purity to an earthenware container.
הלכה כו
מֵי שְׁפִיכוֹת הֲרֵי הֵן בְּחֶזְקַת טֻמְאָה. יָרְדוּ עֲלֵיהֶן מֵי גְּשָׁמִים אִם רַבּוּ עֲלֵיהֶן הֲרֵי הֵן טְהוֹרִים. מֶחֱצָה לְמֶחֱצָה הַכּל טָמֵא בֵּין בְּכֵלִים בֵּין בְּקַרְקָעוֹת. אֵימָתַי בִּזְמַן שֶׁקָּדְמוּ מֵי שְׁפִיכָה אֲבָל קָדְמוּ מֵי גְּשָׁמִים וְיָרְדוּ עֲלֵיהֶן כָּל שֶׁהוּא מִמֵּי שְׁפִיכוֹת הַכּל טָמֵא שֶׁמַּשְׁקִין טְמֵאִין שֶׁיָּרְדוּ לִטְהוֹרִים מְטַמְּאִין בְּכָל שֶׁהוּא:
כסף משנה
26.
Drainage water can be assumed to be impure. If rain water descended upon it to the extent that it became the majority, the mixture is pure. If they are of equal quantities, everything is impure, whether the water is found in a container or on the earth.When does this apply? When the drainage water came first. If, however, the rain water came first and then even the slightest amount of drainage water fell upon them, everything is impure, for when impure liquids descend into pure liquids, even the slightest amount imparts impurity.
הלכה כז
הַטּוֹרֵף אֶת גַּגּוֹ וְהַמְכַבֵּס אֶת כְּסוּתוֹ וַהֲרֵי הֵן מְנַטְּפִים יָרְדוּ עֲלֵיהֶן גְּשָׁמִים וְרַבּוּ הַנְּטִיפוֹת הֲרֵי רַבּוּ מֵי גְּשָׁמִים עֲלֵיהֶן וְהַנּוֹטְפִים מֵהֶן טְהוֹרִין:
כסף משנה
27.
When a person spreads mud on the roof of his house or if he washes his clothes and water is dripping from them and then it rained and the dripping increased, we conclude that the majority is rain water and the water that drips is pure.הלכה כח
הַסָּךְ שֶׁמֶן טָהוֹר וְנִטְמָא זֶה הָאָדָם וְטָבַל וַהֲרֵי הַשֶּׁמֶן עַל בְּשָׂרוֹ אִם הָיָה כְּדֵי סִיכַת אֵיבָר קָטָן הֲרֵי הוּא טָהוֹר כְּשֶׁהָיָה מִקֹּדֶם. סָךְ שֶׁמֶן טָמֵא וְטָבַל לֹא טָהַר הַשֶּׁמֶן שֶׁעָלָיו אֶלָּא אִם נִשְׁאַר מִמֶּנּוּ מַשְׁקֶה טוֹפֵחַ הֲרֵי הַשֶּׁמֶן בְּטֻמְאָתוֹ וְאִם לֹא נִשְׁאַר מִמֶּנּוּ כְּדֵי לְהַטְפִּיחַ מִמֶּנּוּ בָּטֵל בְּמִעוּטוֹ:
כסף משנה
28.
The following rules apply when a person applied ritually pure oil to his body and afterwards contracted impurity. If he immersed himself while the oil is still on his body, if merely the amount of oil to rub on a small finger was applied, the oil is pure as it was originally.If a person applies impure oil to his body and immerses himself, the oil on his body does not regain purity. Instead, if there is moist oil on his body, the oil remains impure. If there is not enough that feels moist, it is nullified because of the small amount that is there.