Leviticus 13:16-21

¹⁶But if the person's flesh changes and becomes white, he must go to the priest again.

¹⁷The priest must examine him again; and if the sores have become white, the priest will declare that the person who had been infected is now permitted to be with other people again.

¹⁸When someone has a boil on his skin and it has healed,

¹⁹but in the place where the boil was a white swelling or a bright/shiny spot appears, he must go to the priest.

²⁰The priest must examine it. And if it seems to be deeper than just on the skin, and if the hair in that spot has become white, it is a contagious skin disease that has appeared where the boil had been. And the priest will declare that the person must stay away from other people.

²¹But when the priest examines it, if there is no white hair in that spot and it is only on the surface of the skin and has become less bright/shiny, then the priest will order him to stay away from other people for seven days.