נגעים ה׳Negaim 5

Mishnah 1א׳

כָּל סְפֵק נְגָעִים טָהוֹר, חוּץ מִזֶּה, וְעוֹד אַחֵר. וְאֵיזֶה, זֶה מִי שֶׁהָיְתָה בוֹ בַּהֶרֶת כַּגְּרִיס וְהִסְגִּירָהּ, בְּסוֹף שָׁבוּעַ וַהֲרֵי הִיא כַּסֶּלַע, סָפֵק שֶׁהִיא הִיא, סָפֵק שֶׁאַחֶרֶת בָּאָה תַחְתֶּיהָ, טָמֵא:

Any doubt regarding Negaim [diseased patches on skin, clothes, or houses that create impurity] is considered pure except for this [the following case] and another. And which is [this case]? Someone who had upon him a Baheret [type of diseased patch that creates impurity] like [the size of] a bean, and quarantined it, and behold at the end of the week it was the size of a Sela [coin bigger than a bean, but] it is doubtful whether it was it [the original Nega] or whether another [Nega] had come in place of it, [this case is ruled] impure.

Mishnah 2ב׳

הֶחְלִיטוֹ בְשֵׂעָר לָבָן, הָלַךְ שֵׂעָר לָבָן וְחָזַר שֵׂעָר לָבָן, וְכֵן בְּמִחְיָה וּבְפִשְׂיוֹן, בַּתְּחִלָּה וּבְּסוֹף שָׁבוּעַ רִאשׁוֹן, בְּסוֹף שָׁבוּעַ שֵׁנִי, לְאַחַר הַפְּטוּר, הֲרֵי הִיא כְמוֹ שֶׁהָיְתָה. הֶחְלִיטוֹ בְמִחְיָה, וְהָלְכָה הַמִּחְיָה וְחָזְרָה הַמִּחְיָה. וְכֵן בְּשֵׂעָר לָבָן וּבְפִשְׂיוֹן, בַּתְּחִלָּה, בְּסוֹף שָׁבוּעַ רִאשׁוֹן, בְּסוֹף שָׁבוּעַ שֵׁנִי, לְאַחַר הַפְּטוּר, הֲרֵי הִיא כְמוֹ שֶׁהָיְתָה. הֶחְלִיטוֹ בְפִשְׂיוֹן, הָלַךְ הַפִּשְׂיוֹן וְחָזַר הַפִּשְׂיוֹן. וְכֵן בְּשֵׂעָר לָבָן, בְּסוֹף שָׁבוּעַ רִאשׁוֹן, בְּסוֹף שָׁבוּעַ שֵׁנִי, לְאַחַר הַפְּטוּר, הֲרֵי הִיא כְמוֹת שֶׁהָיְתָה:

[If] he decided it [to be impure] by its white hair [seen in the Nega], [if] the white hair went away and then the white hair reappeared, and so too [if the hair was replaced with] a healthy patch of skin or an expansion, [whether he decided it by its white hair] initially, at the end of the first week, at the end of the second week, or after it was exempted, behold it returns to its previous status [of impurity]. [If] he decided it [to be impure] by a healthy patch of skin [seen in the Nega], [if] the healthy patch of skin went away and then the healthy patch of skin reappeared, and so too [if the patch was replaced with] white hair or an expansion, [whether he decided it by its healthy patch of skin] initially, at the end of the first week, at the end of the second week, or after it was exempted, behold it returns to its previous status [of impurity]. [If] he decided it [to be impure] by an expansion [of the Nega], [if] the expansion went away and then the expansion reappeared, and so too [if the expansion was replaced with] white hair, [whether he decided it by its expansion] at the end of the first week, at the end of the second week, or after it was exempted, behold it returns to its previous status [of impurity].