Leviticus 14:38KJV

36Then the priest shall command that they empty the house, before the priest go to see the plague, that all that in the house be not made unclean: and afterward the priest shall go in to see the house:

37And he shall look on the plague, and, behold, the plague in the walls of the house with hollow strakes, greenish or reddish, which in sight 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, the plague be spread in the walls of the house;

40Then the priest shall command that they take away the stones in which the plague , and they shall cast them into an unclean place without the city: