Mishnah Negaim 14:2: He comes to him to send away the living bird, he does not face the sea nor the city nor the desert, as it says (Leviticus 14) "He shall send away the living bird outside the city toward the field." He comes to shave the leper, he passes a razor over all of his body, washes his clothing, and immerses. He is pure in that he does not make [places] impure by entering, but he makes things impure like a vermin. He can enter within the wall, but he cannot enter his house for seven days and he is forbidden from sexual relations.

בָּא לוֹ לְשַׁלֵּחַ אֶת הַצִּפּוֹר הַחַיָּה, אֵינוֹ הוֹפֵךְ פָּנָיו לֹא לַיָּם וְלֹא לָעִיר וְלֹא לַמִּדְבָּר, שֶׁנֶּאֱמַר (ויקרא יד), וְשִׁלַּח אֶת הַצִּפֹּר הַחַיָּה אֶל מִחוּץ לָעִיר אֶל פְּנֵי הַשָּׂדֶה. בָּא לְגַלֵּחַ אֶת הַמְּצֹרָע, הֶעֱבִיר תַּעַר עַל כָּל בְּשָׂרוֹ, וְכִבֵּס בְּגָדָיו, וְטָבַל, טָהוֹר מִלְּטַמֵּא בְּבִיאָה, וַהֲרֵי הוּא מְטַמֵּא כַשֶּׁרֶץ. נִכְנַס לִפְנִים מִן הַחוֹמָה, מְנֻדֶּה מִבֵּיתוֹ שִׁבְעַת יָמִים, וְאָסוּר בְּתַשְׁמִישׁ הַמִּטָּה:

Mishnah Negaim 14:3: On the seventh day he shaves a second shaving like the first shaving, he washes his clothing and immerses. He is [now] pure in that he does not make things impure like a vermin, and is now [in terms of purity status] a Tevul Yom [someone who has immersed on that day]. He is permitted to eat tithes. Once the sun sets he can eat from Terumah [a portion of a crop given to a priest which becomes holy upon separation]. Once he brings his atonement [sacrifices] he can eat from holy things. It is found that there are three stages of purity by a leper and three stages of purity by one who gives birth.

בַּיּוֹם הַשְּׁבִיעִי מְגַלֵּחַ תִּגְלַחַת שְׁנִיָּה כַּתִּגְלַחַת הָרִאשׁוֹנָה, כִּבֶּס בְּגָדָיו וְטָבַל, טָהוֹר מִלְּטַמֵּא כַשֶּׁרֶץ, וַהֲרֵי הוּא טְבוּל יוֹם, אוֹכֵל בַּמַּעֲשֵׂר. הֶעֱרִיב שִׁמְשׁוֹ, אוֹכֵל בַּתְּרוּמָה. הֵבִיא כַפָּרָתוֹ, אוֹכֵל בַּקָּדָשִׁים. נִמְצְאוּ שָׁלשׁ טְהָרוֹת בַּמְּצֹרָע וְשָׁלשׁ טְהָרוֹת בַּיּוֹלֶדֶת: