Leviticus 13
34 Ref On the seventh day, the priest shall examine the itch; and, behold, if the itch hasn't spread in the skin, and its appearance isn't deeper than the skin, then the priest shall pronounce him clean. He shall wash his clothes, and be clean.
35 Ref But if the itch spreads in the skin after his cleansing,
36 then the priest shall examine him; and, behold, if the itch has spread in the skin, the priest shall not look for the yellow hair; he is unclean.
37 But if in his eyes the itch is arrested, and black hair has grown in it; the itch is healed, he is clean. The priest shall pronounce him clean.