Leviticus 5:10-12 Common English Bible (CEB)
10 Then, with the second bird, the priest will perform an entirely burned offering according to the regulation. In this way, the priest will make reconciliation for you because of the sin you committed, and you will be forgiven.
11 If you cannot afford two doves or two pigeons, you can bring as the offering for your sin a tenth of an ephah[a] of choice flour as a purification offering. You must not put any oil on it, nor any frankincense, because it is a purification offering. 12 You will bring it to the priest, and the priest will take a handful from it—the token portion—and will burn it completely on the altar along with the food gifts for the Lord. It is a purification offering.