Leviticus 13:30-31

LITV(i) 30 then the priest shall look on the plague. And, behold, if its appearance is deeper than the skin, and a thin shining hair in it, the priest shall pronounce him unclean; it is a scab, a leprosy on the head or beard. 31 And when the priest looks on the plague of the scab; and, behold, it is not in sight deeper than the skin, and there is no black hair in it, then the priest shall shut up the plagued one with the scab seven days.