Mishnah Negaim 7:3: A Baheret with nothing in it, initially [or] at the end of the first week, it should be quarantined. At the end of the second week [or] after it has been exempted [from being a Nega], it should be exempted. [If] he was still quarantining or exempting it and it developed signs of impurity, it should be decided [as impure]. A Baheret with signs of impurity in it should be decided [as impure]. [If] he was still deciding it and the signs of impurity went away, initially [or] at the end of the first week it should be quarantined. At the end of the second week [or] after the exemption, it should be exempted.

בַּהֶרֶת וְאֵין בָּהּ כְּלוּם, בַּתְּחִלָּה, בְּסוֹף שָׁבוּעַ רִאשׁוֹן, יַסְגִּיר. בְּסוֹף שָׁבוּעַ שֵׁנִי, לְאַחַר הַפְּטוּר, יִפְטֹר. עוֹדֵהוּ מַסְגִּירוֹ וּפוֹטֵר וְנוֹלְדוּ לוֹ סִימָנֵי טֻמְאָה, יַחְלִיט. בַּהֶרֶת וּבָהּ סִימָנֵי טֻמְאָה, יַחְלִיט. עוֹדֵהוּ מַחְלִיטוֹ וְהָלְכוּ לָהֶן סִימָנֵי טֻמְאָה, בַּתְּחִלָּה, בְּסוֹף שָׁבוּעַ רִאשׁוֹן, יַסְגִּיר. בְּסוֹף שָׁבוּעַ שֵׁנִי, לְאַחַר הַפְּטוּר, יִפְטֹר:

Mishnah Negaim 7:4: One who removes the signs of impurity or burns the healthy patch of skin transgresses a negative commandment. And as for [the matter of] purity, as long as he does not go to the priest, he is pure. [If the removal occurred] after it had been decided [as impure], he is impure. Rabbi Akiva said: I asked Rabban Gamliel and Rabbi Yehoshua as they were walking to Gadvad, [if the removal occurred] during his quarantine, what is [the law]? They said to me: We have not heard [about this]. But we have heard that, 'As long as he does not go to the priest, he is pure. After it has been decided, he is impure.' I began to bring proofs that whether [the removal occurred] while he was standing before a priest [or] during his quarantine, it is pure until the priest declares it impure. [If the removal occurred after it had been decided,] when does he become pure? Rabbi Eliezer says: When another Nega develops upon him and he becomes pure from it. But the Sages say: [He is impure] until it spreads all over him or until his Baheret diminishes to less than [the size of] a bean.

הַתּוֹלֵשׁ סִימָנֵי טֻמְאָה, וְהַכּוֹוֶה אֶת הַמִּחְיָה, עוֹבֵר בְּלֹא תַעֲשֶׂה. וּלְטָהֳרָה, עַד שֶׁלֹּא בָא אֵצֶל הַכֹּהֵן, טָהוֹר. לְאַחַר הֶחְלֵטוֹ, טָמֵא. אָמַר רַבִּי עֲקִיבָא, שָׁאַלְתִּי אֶת רַבָּן גַּמְלִיאֵל וְאֶת רַבִּי יְהוֹשֻׁעַ הוֹלְכִין לְגַדְוָד, בְּתוֹךְ הֶסְגֵּרוֹ, מַה הוּא. אָמְרוּ לִי, לֹא שָׁמַעְנוּ. אֲבָל שָׁמַעְנוּ, עַד שֶׁלֹּא בָא אֵצֶל הַכֹּהֵן, טָהוֹר, לְאַחַר הֶחְלֵטוֹ, טָמֵא. הִתְחַלְתִּי מֵבִיא לָהֶם רְאָיוֹת. אֶחָד עוֹמֵד בִּפְנֵי הַכֹּהֵן וְאֶחָד בְּתוֹךְ הֶסְגֵּרוֹ, טָהוֹר, עַד שֶׁיְּטַמְּאֶנּוּ הַכֹּהֵן. מֵאֵימָתַי הִיא טָהֳרָתוֹ, רַבִּי אֱלִיעֶזֶר אוֹמֵר, לִכְשֶׁיִּוָּלֶד לוֹ נֶגַע אַחֵר וְיִטְהַר מִמֶּנּוּ. וַחֲכָמִים אוֹמְרִים, עַד שֶׁתִּפְרַח בְּכֻלּוֹ, אוֹ עַד שֶׁתִּתְמַעֵט בַּהַרְתּוֹ מִכַּגְּרִיס: