Leviticus 5:5-8

⁵When someone is guilty in any of these things, he must confess whatever sin he has committed.

⁶Then he must bring his guilt offering to Yahweh for the sin that he has committed, a female animal from the flock, either a lamb or a goat, for a sin offering, and the priest will make atonement for him concerning his sin.

⁷If he cannot afford to buy a lamb, then he can bring as his guilt offering for his sin two doves or two young pigeons to Yahweh, one for a sin offering and the other for a burnt offering.

⁸He must bring them to the priest, who will offer one for the sin offering first—he will wring off its head from its neck but will not remove it completely from the body.