Leviticus 14:33

31of the kind he is able to afford, the one for a sin offering, and the other for a burnt offering, with the meal offering. The priest shall make atonement for him who is to be cleansed before the LORD.”

32This is the law for him in whom is the plague of leprosy, who is not able to afford the sacrifice for his cleansing.

33The LORD spoke to Moses and to Aaron, saying,

34“When you have come into the land of Canaan, which I give to you for a possession, and I put a spreading mildew in a house in the land of your possession,

35then he who owns the house shall come and tell the priest, saying, ‘There seems to me to be some sort of plague in the house.’