Leviticus 14:30-38

³⁰And he shall offer one of the turtle-doves, or of the young pigeons, such as he can get;

³¹Even such as he is able to get, the one for a sin-offering, and the other for a burnt-offering, with the meat-offering. And the priest shall make an atonement for him that is to be cleansed, before the LORD.

³²This is the law of him in whom is the plague of leprosy, whose hand is not able to get that which pertaineth to his cleansing.

³³And the LORD spoke to Moses and to Aaron, saying,

³⁴When ye shall have 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;

³⁵And he that owneth the house shall come and tell the priest, saying, it seemeth to me there is as it were a plague in the house:

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

³⁷And he shall look on the plague, and behold, if the plague is in the walls of the house, with hollow streaks, greenish, or reddish, which in sight are 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: