Leviticus 14:40-45

40then the priest shall command that they take away the stones in which the plague is, and they shall cast them out of the city, in an unclean place.

41And he shall cause the house to be scraped within round about, and they shall pour out the mortar that they have scraped off, out of the city in an unclean place.

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

43And if the plague come again, and break out in the house, after he hath taken away the stones, and after he hath scraped the house, and after it is plastered,

44then the priest shall come, and when he looketh, and behold, the plague hath spread in the house, it is a corroding leprosy in the house: it is unclean.

45And they shall break down the house, the stones of it, and the timber thereof, and all the mortar of the house, and shall carry them forth out of the city to an unclean place.