Leviticus 13:21-23

New American Standard Bible

²¹ But if the priest looks at it, and behold, there are no white hairs in it and it is not deeper than the skin and is faded, then the priest shall ^[a]isolate him for seven days; ²² and if it spreads farther on the skin, then the priest shall pronounce him unclean; it is an infection. ²³ But if the bright spot remains in its place and does not spread, it is only the scar of the boil; and the priest shall pronounce him clean.