TT #144 · Parshas Tazria · Aliyah 2 · Passuk 17
English: And the priest sees that the affected area has turned white, the priest shall pronounce the affected person clean; they are clean.
Chabad.org — Chumash, English translation + Rashi for Vayikra 13:17
Torah Temimah cites Sifra (Toras Kohanim) for the return of an eruption after earlier decisions based on specified signs or isolation.
Sifra — Vayikra 13, Midrash Sefer
English: “And if it has turned” includes recurrence after a final ruling based on living flesh; after a ruling based on white hair at the beginning, whether at the end of the first or second week; after a ruling based on spreading at the end of either week, even after the person had been declared clean; and after a completed isolation period.
Textual derivation
This unit applies the “turned” wording to recurrence after the previously listed decisions; it treats renewed appearance as legally relevant even after an earlier ruling or isolation period.