Leviticus 14:41-45

And he shall have the house scraped all around inside, and they shall dump the plaster that they scrape off at an unclean place outside the city.

Then they shall take other stones and replace the discarded stones, and he shall take other plaster and replaster the house.

“If, however, the spot breaks out again in the house after he has pulled out the stones and scraped the house, and after it has been replastered,

then the priest shall come in and make an inspection. If he sees that the spot has indeed spread in the house, it is a malignant spot in the house; it is unclean.

The owner shall therefore tear down the house, its stones, its timbers, and all the plaster of the house, and he shall take them outside the city to an unclean place.