Leviticus 14:42-44

Amplified Bible

⁴² Then they shall take new stones and replace the [contaminated] stones, and he shall take plaster and replaster the house.

⁴³ “If, however, the mark breaks out again in the house after he has removed the stones and has scraped and replastered the house, ⁴⁴ then the priest shall come and look again, and if the mark has spread in the house, it is a malignant leprosy in the house; it is [ceremonially] unclean.