Leviticus 13:26-28

Amplified Bible

²⁶ But if the priest examines it and there is no white hair in the bright spot and it is not deeper than [the rest of] the skin but is dull in color, then the priest shall isolate him for seven days. ²⁷ And the priest shall examine him on the seventh day; if it is spreading farther on the skin, then the priest shall pronounce him unclean; it is leprosy. ²⁸ But if the bright spot remains in its place and has not spread in the skin, but is dull in color, it is a swelling from the burn, and the priest shall pronounce him clean; for it is the scar of the burn.