Leviticus 14:30-32

New Century Version

³⁰ Then the priest will offer one of the doves or young pigeons, which the person can afford. ³¹ He must offer one of the birds for a sin offering and the other for a whole burnt offering, along with the grain offering. In this way the priest will make the person clean so he can belong to the Lord again; he will become clean.

³² “These are the teachings for making a person clean after he has had a skin disease, if he cannot afford the regular sacrifices for becoming clean.”