Leviticus 13:31-34

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