[If] two beharos, one tamei and one tahor, spread from one to the other and then covered the afflicted person completely, [he] is tahor. On his upper lip, on his lower lip, on his two fingers, [or] on his two eyelids, even though [only] when they are pressed together [do] they appear as one, he is tahor. [If] it covered him completely except for a white blemish, he is tamei. [If after being covered completely,] his extremities reverted to a type of white blemish, he is tahor. [If] his extremities reverted [on a patch of skin] smaller than a lentil, R’ Meir renders it tamei. And the Sages say: A white blemish smaller than a lentil is an indication of tumah originally, but is not an indication of tumah afterwards.

The [Kohen] shall confine someone who comes completely white. [If] white hair appears, [the Kohen] confirms [him]. [Then, either] both or one of [the white hairs] became black or shortened, a boil touched or surrounded both or one of [the white hairs], [or the white hairs] became separated by [either] a boil, the healing skin of a boil, a burn, the healing skin of a burn, or a dull white blemish. [If, subsequently,] a patch of living skin or white hair appears, [the afflicted person] is tamei. [If] no patch of living skin appeared nor any white hair, he is tahor. In all cases, if the extremities revert [to a normal appearance], they remain as they were. [If] it covered him partially, he is tamei. [If] it covered him completely, he is tahor.