Leviticus 13:4-5

VIN(i) 4 But if the mark on his skin is white, and does not seem to go deeper than the skin, and the hair on it is not turned white, then the priest will keep him shut up for seven days; 5 And the seventh day he shall look on him: and if the leprosy be grown no farther, and hath not spread itself in the skin, he shall shut him up again other seven days.