Leviticus 14:34

31 even such as he is able to get, the one for a sin-offering, and the other for a burnt offering, with the meal-offering: and the priest shall make atonement for him who is to be cleansed before Yahweh.

32 This is the law of him in whom is the plague of leprosy, who is not able to get [that which pertains] to his cleansing.

33 Yahweh spoke to Moses and to Aaron, saying,

34 When you are come into the land of Canaan, which I give to you for a possession, and I put the plague of leprosy in a house of the land of your possession;

35 then he who owns the house shall come and tell the priest, saying, There seems to me to be as it were a plague in the house.

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

37 and he shall look on the plague; and, behold, if the plague be in the walls of the house with hollow streaks, greenish or reddish, and the appearance of it be lower than the wall;