Leviticus 14:39-41

Amplified Bible

³⁹ The priest shall return on the seventh day and look; and if the mark has spread on the walls of the house, ⁴⁰ he shall order them to tear out the contaminated stones and throw them into an unclean place outside the city. ⁴¹ He shall have the entire inside area of the house scraped, and the plaster that is scraped off shall be dumped in an unclean place outside the city.