Leviticus 13:6-8

New King James Version

⁶ Then the priest shall examine him again on the seventh day; and indeed if the sore has faded, and the sore has not spread on the skin, then the priest shall pronounce him clean; it is only a scab, and he ^(A)shall wash his clothes and be clean. ⁷ But if the scab should at all spread over the skin, after he has been seen by the priest for his cleansing, he shall be seen by the priest again. ⁸ And if the priest sees that the scab has indeed spread on the skin, then the priest shall pronounce him ^[a]unclean. It is leprosy.