Leviticus 5:11-13

5:11 “‘If he cannot afford two turtledoves or two young pigeons, he must bring as his offering for his sin which he has committed a tenth of an ephah of choice wheat flour for a sin offering. He must not place olive oil on it and he must not put frankincense on it, because it is a sin offering. 5:12 He must bring it to the priest and the priest must scoop out from it a handful as its memorial portion and offer it up in smoke on the altar on top of the other gifts of the Lord – it is a sin offering. 5:13 So the priest will make atonement on his behalf for his sin which he has committed by doing one of these things, and he will be forgiven. The remainder of the offering will belong to the priest like the grain offering.’”