Leviticus 13:3-5

New Catholic Bible

³ The priest shall examine the diseased spot on his skin. If the hair of the diseased spot has become white and the sore seems to be deeper than the surface of the skin, then the disease is leprosy. When the priest has examined it, he shall pronounce him unclean. ⁴ But if the spot on his skin is white and is not deeper than the skin and the hair on it has not become white, the priest shall quarantine the person with the sore for seven days. ⁵ On the seventh day the priest shall examine that person again. If he sees that the sore has not changed, and the sore has not spread, he shall quarantine that person for another seven days.