Leviticus 14:41

39The priest shall come again on the seventh day, and look. If the plague has spread in the walls of the house,

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

41He shall cause the inside of the house to be scraped all over. They shall pour out the mortar that they scraped off outside of the city into an unclean place.

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

43“If the plague comes again, and breaks out in the house after he has taken out the stones, and after he has scraped the house, and after it was plastered,