Leviticus 14:42

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 without the city:

⁴¹And he shall cause the house to be scraped within round about, and they shall pour out the dust that they scrape off without the city into an unclean place:

— Leviticus 14:42 —

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

⁴⁴Then the priest shall come and look, and, behold, if the plague be spread in the house, it is a fretting leprosy in the house: it is unclean.