וְכֹֽה־תַעֲשֶׂ֤ה לָהֶם֙ לְטַֽהֲרָ֔ם הַזֵּ֥ה עֲלֵיהֶ֖ם מֵ֣י חַטָּ֑את וְהֶעֱבִ֤ירוּ תַ֙עַר֙ עַל־כָּל־בְּשָׂרָ֔ם וְכִבְּס֥וּ בִגְדֵיהֶ֖ם וְהִטֶּהָֽרוּ׃
你要這樣做，使他們潔淨：把除罪的水灑在他們身上，他們要用剃刀剃全身，洗淨衣服，使自己潔淨。
Mishnah Negaim
There are three who must shave their hair, and their shaving of it is a commandment: the nazirite, the metzora, and the Levites. If any of these cut their hair but not with a razor, or if they left even two remaining hairs, their act is of no validity.