Leviticus 5:10-13

¹⁰The priest must then prepare the second bird as a burnt offering according to the regulations. In this way the priest will make you right for your sin, and you will be forgiven.

¹¹If you can't afford two turtledoves or two young pigeons you may bring a tenth of an ephah of the best flour as a sin offering. Don't put olive oil or frankincense on it, because it is a sin offering.

¹²Take it to the priest, who shall take a handful as a ‘reminder part’ and burn it on the altar on top of the burnt offerings to the Lord. It is a sin offering.

¹³This is how the priest will make right any of these sins you have committed, and you will be forgiven. The rest of the offering will belong to the priest, just like the grain offering.”