Mishnah Negaim 12:5: How is a house examined? (Leviticus 14:35) "The one who owns the house comes and tells the priest saying, Something like a Nega has appeared in my house." Even a learned person who knows that it is definitely a Nega, cannot declare and say, "a Nega has appeared in my house," but rather he must say, "Something like a Nega has appeared in my house." (Leviticus 14:36) "The priest commands the house to be emptied (before the priest comes to see the house so that everything in the house will not become impure and then the priest comes to examine the house"). Even bundles of wood and bundles of reeds, says Rabbi Yehuda. Rabbi Shimon says is he being kept busy emptying out his house? Rabbi Meir says, What of his property becomes impure? If you want to say his wooden utensils, his clothing, and his metal objects, he can immerse them and they will become pure. For which items was the Torah concerned? For his earthenware vessels, his small jugs and his oil dropper. If the Torah was so concerned for his less valuable objects, how much more so for his valuable objects. If so for his money, how much more so for the lives of his sons and daughters. If so for what belongs to a wicked person, how much more so for what belongs to a righteous person.

כֵּיצַד רְאִיַּת הַבָּיִת. וּבָא אֲשֶׁר לוֹ הַבַּיִת וְהִגִּיד לַכֹּהֵן לֵאמֹר כְּנֶגַע נִרְאָה לִי בַּבָּיִת (ויקרא יד). אֲפִלּוּ תַלְמִיד חָכָם וְיוֹדֵעַ שֶׁהוּא נֶגַע וַדַּאי, לֹא יִגְזֹר וְיֹאמַר נֶגַע נִרְאָה לִי בַּבָּיִת, אֶלָּא כְּנֶגַע נִרְאָה לִי בַּבָּיִת. וְצִוָּה הַכֹּהֵן וּפִנּוּ אֶת הַבַּיִת (בְּטֶרֶם יָבֹא הַכֹּהֵן לִרְאוֹת אֶת הַנֶּגַע וְלֹא יִטְמָא כָּל אֲשֶׁר בַּבָּיִת וְאַחַר כֵּן יָבֹא הַכֹּהֵן לִרְאוֹת אֶת הַבָּיִת (שם, וַאֲפִלּוּ חֲבִילֵי עֵצִים, וַאֲפִלּוּ חֲבִילֵי קָנִים, דִּבְרֵי רַבִּי יְהוּדָה. רַבִּי שִׁמְעוֹן אוֹמֵר, עֵסֶק הוּא לַפִּנּוּי. אָמַר רַבִּי מֵאִיר, וְכִי מָה מִטַּמֵּא לוֹ. אִם תֹּאמַר, כְּלֵי עֵצָיו וּבְגָדָיו וּמַתְּכוֹתָיו, מַטְבִּילָן וְהֵן טְהוֹרִים. עַל מֶה חָסָה הַתּוֹרָה. עַל כְּלֵי חַרְסוֹ וְעַל פַּכּוֹ וְעַל טִפְיוֹ. אִם כָּךְ חָסָה הַתּוֹרָה עַל מָמוֹנוֹ הַבָּזוּי, קַל וָחֹמֶר עַל מָמוֹנוֹ הֶחָבִיב. אִם כָּךְ עַל מָמוֹנוֹ, קַל וָחֹמֶר עַל נֶפֶשׁ בָּנָיו וּבְנוֹתָיו. אִם כָּךְ עַל שֶׁל רָשָׁע, קַל וָחֹמֶר עַל שֶׁל צַדִּיק:

Mishnah Negaim 12:6: He does not go into his own house to quarantine it, nor does he go inside the house with the Nega and quarantine it. Rather he stands next to the entrance of the house with the Nega in it and quarantines it, as it says "The priest goes out of the house to the entrance of the house and quarantines the house for seven days" (Leviticus 14:38). He comes at the end of the week and examines if it spread. "The priest commands and they remove the stones that have the Nega on them and they send them to the outside of the city to an impure place" (Leviticus 14:42). "And they take other stones and bring them in place of the removed stones and he takes different dirt and plasters the house" (Leviticus 14:42). He does not take stones from one side of it to put in the other side of it nor dirt from one side to place in another side and not lime from any place. He does not bring one in place of two [stones] nor two in place of one, but he can bring two in place of two, in place of three, or in place of four. From here they said, Woe to the evil person, woe to his neighbor. Both remove [the stones], both scrape [around them] and both bring the [new] stones. However, he alone must bring the [new] dirt as it says, "he takes different dirt and plasters the house." His friend does not help with the plastering.

אֵינוֹ הוֹלֵךְ לְתוֹךְ בֵּיתוֹ וּמַסְגִּיר, וְלֹא בְתוֹךְ הַבַּיִת שֶׁהַנֶּגַע בְּתוֹכוֹ וּמַסְגִּיר, אֶלָּא עוֹמֵד עַל פֶּתַח הַבַּיִת שֶׁהַנֶּגַע בְּתוֹכוֹ וּמַסְגִּיר, שֶׁנֶּאֱמַר (ויקרא יד), וְיָצָא הַכֹּהֵן מִן הַבַּיִת אֶל פֶּתַח הַבָּיִת וְהִסְגִּיר אֶת הַבַּיִת שִׁבְעַת יָמִים. וּבָא בְסוֹף הַשָּׁבוּעַ וְרָאָה אִם פָּשָׂה, וְצִוָּה הַכֹּהֵן וְחִלְּצוּ אֶת הָאֲבָנִים אֲשֶׁר בָּהֵן הַנָּגַע וְהִשְׁלִיכוּ אֶתְהֶן אֶל מִחוּץ לָעִיר אֶל מָקוֹם טָמֵא. וְלָקְחוּ אֲבָנִים אֲחֵרוֹת וְהֵבִיאוּ אֶל תַּחַת הָאֲבָנִים וְעָפָר אַחֵר יִקַּח וְטָח אֶת הַבָּיִת (שם). אֵינוֹ נוֹטֵל אֲבָנִים מִצַּד זֶה וּמֵבִיא לְצַד זֶה, וְלֹא עָפָר מִצַּד זֶה וּמֵבִיא לְצַד זֶה, וְלֹא סִיד מִכָּל מָקוֹם. אֵינוֹ מֵבִיא לֹא אַחַת תַּחַת שְׁתַּיִם וְלֹא שְׁתַּיִם תַּחַת אַחַת, אֶלָּא מֵבִיא שְׁתַּיִם תַּחַת שְׁתַּיִם, תַּחַת שָׁלשׁ, תַּחַת אַרְבַּע. מִכָּאן אָמְרוּ, אוֹי לָרָשָׁע אוֹי לִשְׁכֵנוֹ, שְׁנֵיהֶן חוֹלְצִין, שְׁנֵיהֶן קוֹצְעִין, שְׁנֵיהֶן מְבִיאִין אֶת הָאֲבָנִים. אֲבָל הוּא לְבַדּוֹ מֵבִיא אֶת הֶעָפָר, שֶׁנֶּאֱמַר (שם), וְעָפָר אַחֵר יִקַּח וְטָח אֶת הַבָּיִת, אֵין חֲבֵרוֹ מִטַּפֵּל עִמּוֹ בַּטִּיחָה: