Reference for Negaim 1:5
כֵּיצַד לְהָקֵל. הָיָה בוֹ שֵׂעָר לָבָן וְהָלַךְ לוֹ שֵׂעָר לָבָן, הָיוּ לְבָנוֹת וְהִשְׁחִירוּ, אַחַת לְבָנָה וְאַחַת שְׁחוֹרָה, וְהִשְׁחִירוּ שְׁתֵּיהֶן, אֲרֻכּוֹת וְהִקְצִירוּ, אַחַת אֲרֻכָּה וְאַחַת קְצָרָה וְהִקְצִירוּ שְׁתֵּיהֶן, נִסְמַךְ הַשְּׁחִין לִשְׁתֵּיהֶן אוֹ לְאַחַת מֵהֶן, הִקִּיף הַשְּׁחִין לִשְׁתֵּיהֶן אוֹ לְאַחַת מֵהֶן, אוֹ חִלְּקָן הַשְּׁחִין וּמִחְיַת הַשְּׁחִין וְהַמִּכְוָה וּמִחְיַת הַמִּכְוָה וְהַבֹּהַק, הָיְתָה בוֹ מִחְיָה וְהָלְכָה לָהּ הַמִּחְיָה, הָיְתָה מְרֻבַּעַת וְנַעֲשֵׂית עֲגֻלָּה אוֹ אֲרֻכָּה, מְבֻצֶּרֶת וְנַעֲשֵׂית מִן הַצַּד, מְכֻנֶּסֶת וְנִתְפַּזְּרָה, וּבָא הַשְּׁחִין וְנִכְנַס בְּתוֹכָהּ. הִקִּיפָהּ, חִלְּקָהּ, אוֹ מִעֲטָהּ הַשְּׁחִין אוֹ מִחְיַת הַשְּׁחִין, וְהַמִּכְוָה וּמִחְיַת הַמִּכְוָה וְהַבֹּהַק, הָיָה בוֹ פִסְיוֹן וְהָלַךְ לוֹ פִסְיוֹן, אוֹ שֶׁהָלְכָה לָהּ הָאוֹם אוֹ שֶׁנִּתְמַעֲטָה וְאֵין בָּזֶה וּבָזֶה כַגְּרִיס, הַשְּׁחִין וּמִחְיַת הַשְּׁחִין וְהַמִּכְוָה וּמִחְיַת הַמִּכְוָה וְהַבֹּהַק חוֹלְקִין בֵּין הָאוֹם לַפִּסְיוֹן, הֲרֵי אֵלּוּ לְהָקֵל:
How [is waiting until after Shabbat considered] a leniency? [If] he had in [the <i>Nega</i>] white hair [on Shabbat] and [after Shabbat] the white hair disappeared from it, [or if] if there were white [hairs] and they blackened, [or if there were] one white and one black, and the two of them blackened, [or if the hairs were] long and they were shortened, [or if there were] one long and one short, and the two of them were shortened, [or if] a boil encroached upon the two of them or upon one of them, [or if] a boil surrounded the two of them or one of them, or divided them - [this refers to] a boil, a partly-healed boil, a burn, a partly-healed burn, or a <i>Bohak</i> [very white blemish]. [Other cases of leniency include if the skin] had a healed part and then the healed part went away, [or if the area of the <i>Nega</i>] was square and became circular or stretched, [or if a healed part of skin] was surrounded [by a <i>Nega</i>] and then [the <i>Nega</i>] moved to the side, [or if the healed part of skin] was concentrated and then became scattered, [or if] a boil came and went into [the healed part of the skin], surrounded it, split it, or diminished it - [this refers to] a boil, a partly-healed boil, a burn, a partly-healed burn, or a <i>Bohak</i>. [Other cases of leniency include if the <i>Nega</i>] had an extension and then the extension went away, or if the original [<i>Nega</i>] went away, or it decreased [so that] there was not between this one and that one [i.e. between the original and the extension] an [area of] a bean, [or if a] boil, a partly-healed boil, a burn, a partly-healed burn, or a <i>Bohak</i> separate between the original and its expansion. These are [cases in which waiting until after Shabbat is considered a] leniency.