Leviticus 14:40-45

40then 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.

41And 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.

42Then they shall take other stones and put them in the place of those stones, and he shall take other mortar and plaster the house.

43“Now if the plague comes back and breaks out in the house, after he has taken away the stones, after he has scraped the house, and after it is plastered,

44then the priest shall come and look; and indeed if the plague has spread in the house, it is an active leprosy in the house. It is unclean.

45And he shall break down the house, its stones, its timber, and all the plaster of the house, and he shall carry them outside the city to an unclean place.