Leviticus 13:7-9

Complete Jewish Bible

⁷ But if the scab spreads further on the skin after he has been examined by the cohen and declared clean, he is to let himself be examined yet again by the cohen. ⁸ The cohen will examine him, and if he sees that the scab has spread on his skin, then the cohen will declare him unclean; it is tzara‘at.

⁹ “If a person has tzara‘at, he is to be brought to the cohen.