A baheres the size of a gris expanded an [additional] gris. Living skin or white hair [then] appeared inside the expansion, and the original nega disappeared. R’ Akiva renders it tamei, and the Sages say: It must be examined anew. A baheres half the size of a gris has no [other symptoms] inside it. [Another] baheres half the size of a gris appears, which has one [white] hair. This nega is confined. A baheres half the size of a gris has one [white] hair. [Another] baheres half the size of a gris appears, [also] having one [white] hair. This nega is confined. A baheres half the size of a gris has two [white] hairs. [Another] baheres half the size of a gris appears, containing one [white] hair. This nega is confined.

A baheres half the size of a gris has no [other symptoms] inside it. [Another] baheres half the size of a gris appears that has two hairs. This nega is confirmed, because [the Sages] stated: If the baheres preceded the white hair, [the afflicted person] is tamei, but if the white hair preceded the baheres, he is tahor. If it is uncertain, [the afflicted person] is tamei, but R’ Yehoshua disapproves [of this ruling].

Any doubt concerning negaim is ruled tahor, except for this [last] case and [the next] one. And what is [the next case]? Someone had a baheres the size of a gris that [the Kohen] confined. At the end of the week [of confinement], it was the size of a sela, [but] it is uncertain whether this is [the original nega that spread] or a different [nega] that replaced it. [The Kohen rules it confirmed] tamei.

[The Kohen] confirmed [a nega] because of white hair, which [then] disappeared. Subsequently, either the white hair reappeared, or living skin or expansion appeared. [Whether the original white hair had appeared] initially, after the first week, after the second week, [or] after the nega had been declared tahor, [the status of the nega] does not change. [The Kohen] confirmed [a nega] because of living skin, which [then] disappeared. Subsequently, either the living skin reappeared, or white hair or expansion appeared. [Whether the nega was originally confirmed] initially, after the first week, after the second week, [or] after it had been declared tahor, [the status of the nega] does not change. [The Kohen] confirmed [a nega] because of expansion, which [then] disappeared. Subsequently, either the expansion reappeared or white hair appeared. [Whether the original nega was initially confirmed] at the end of the first week, at the end of the second week, [or] after it was declared tahor, [the status of the nega] does not change.