Leviticus 13:2

13:2 “When someone has a swelling or a scab or a bright spot on the skin of his body that may become a diseased infection, he must be brought to Aaron the priest or one of his sons, the priests.

Leviticus 13:26

13:26 If, however, the priest examines it and there is no white hair in the bright spot, it is not deeper than the skin, and it has faded, then the priest is to quarantine him for seven days.

Leviticus 13:39

13:39 the priest is to examine them, and if the bright spots on the skin of their body are faded white, it is a harmless rash that has broken out on the skin. The person is clean.