Negaim 4:11 - 5:1

ונולד בהרת כחצי גריס ובה שתי שערות כו' הרי זו להחלט – wherever it teaches [in the Mishnah]: "ובה שתי שערות"/ “and in it are two hairs” or "ובה שערה אחת" / “and in it is one hair”, it is not that the hairs and ""the bright white spot in the flesh/בהרת that come together, but rather, that the bright white spot in the flesh came first and afterwards came the hairs.

ואם שער לבן קדמה לבהרת טהור – as it is written (Leviticus 13:10): "[וראה הכהן והנה שאת-לבנה בעור] והיא הפכה שער לבן [ומחית בשר חי בשאת]."/ “[If the priest finds on the skin a white swelling] which has turned some hair white, [with a patch of un-discolored flesh in the swelling],” it is the bright white spot in the flesh which caused the hair to turn to a white color.

ספק טמא – there is doubt if the white hair preceded the bright white spot in the flesh/בהרת or that the bright white spot in the flesh preceded the white hair, it is impure.

ורבי יהושע קהה – we have the reading. From the language of (Jeremiah 31:29): “[In those days, they shall no longer say, ‘Parents have eaten sour grapes] and children’s teeth are blunted.”/"ושני בנים תקהינה". Meaning to say, that his teeth were blunted from stating the words that it is doubtfully impure, for he held that it is doubtfully pure. But the Halakha is not according to Rabbi Yehoshua.

כל ספק נגעים חוץ מזה – [this relates to Chapter 4, Mishnah 11 towards the end of the Mishnah] – that the doubt regarding the bright white spot in the flesh preceded [or] the doubt about whether the white hair preceded.

הרי היא כסלע – it became as wide and as large as a Sela.

ספק היא היא – and it is worthy/fit [for the person] to be declared a certified leper, for it spread.

ספק שאחרת באה תחתיה – that the first went away/disappeared and he is fit to be shut up/isolated, for spreading does not defile at the outset.

ומחליטו – and he declares him to be a certified leper.