Leviticus 14:37-42

37And he shall look on the plague, and, behold, if the plague is in the walls of the house with hollow streaks, greenish or reddish, which in sight are lower than the wall; 38Then the priest shall go out of the house to the door of the house, and shut up the house seven days: 39And the priest shall come again the seventh day, and shall look: and, behold, if the plague is spread in the walls of the house; 40Then the priest shall command that they take away the stones in which the plague is, and they shall cast them into an unclean place outside the city: 41And he shall cause the house to be scraped within on all sides, and they shall pour out the dust that they scrape off outside the city into an unclean place: 42And they shall take other stones, and put them in the place of those stones; and he shall take other mortar, and shall plaster the house.