Leviticus 5:6-10

6He must give a sheep or a goat for a sin offering. Then the Lord will not be angry with him. The priest will kill the animal as a sacrifice to atone for that sin.

7A person may not have money to buy a sheep or a goat. If he does not, he must buy two doves or two pigeons. He must give them to the Lord. One bird will be a sin offering. The second bird will be a burnt offering.

8The priest will bring one of the birds to the altar. It is the sin offering. He will break the neck of the bird, but he will not pull the head off.

9He will shake some of the blood onto the side of the altar. He will pour the blood that he did not shake onto the floor. He must pour it in front of the altar.

10The priest will burn the other bird. God will not be angry with the man when the priest does this.