Leviticus 14:33-42

And the LORD spoke to Moses and Aaron, saying: “When you have come into the land of Canaan, which I give you as a possession, and I put the leprous plague in a house in the land of your possession, and he who owns the house comes and tells the priest, saying, ‘It seems to me that there is some plague in the house,’ then the priest shall command that they empty the house, before the priest goes into it to examine the plague, that all that is in the house may not be made unclean; and afterward the priest shall go in to examine the house. And he shall examine the plague; and indeed if the plague is on the walls of the house with ingrained streaks, greenish or reddish, which appear to be deep in the wall, then the priest shall go out of the house, to the door of the house, and shut up the house seven days. And the priest shall come again on the seventh day and look; and indeed if the plague has spread on the walls of the house, then the priest shall command that they take away the stones in which is the plague, and they shall cast them into an unclean place outside the city. And he shall cause the house to be scraped inside, all around, and the dust that they scrape off they shall pour out in an unclean place outside the city. Then they shall take other stones and put them in the place of those stones, and he shall take other mortar and plaster the house.