Leviticus 13:32-34

32And in the seventh day the priest shall look on the plague: and, behold, if the scall spreadeth not, and there is in it no yellow hair, and the scall is not in sight deeper than the skin; 33He shall be shaven, but the scall shall he not shave; and the priest shall shut up him that hath the scall seven days more: 34And in the seventh day the priest shall look on the scall: and, behold, if the scall is not spread in the skin, nor is in sight deeper than the skin; then the priest shall pronounce him clean: and he shall wash his clothes, and be clean.