Leviticus 14:38-40

New King James Version

³⁸ then the priest shall go out of the house, to the door of the house, and ^[a]shut up the house seven days. ³⁹ And the priest shall come again on the seventh day and look; and indeed if the plague has spread on the walls of the house, ⁴⁰ then the priest shall command that they take away the stones in which is the plague, and they shall cast them into an unclean place outside the city.