Leviticus 5:5-7

New Catholic Bible

⁵ Therefore, when someone is guilty of any one of these things, he shall confess the sin he has committed. ⁶ He shall bring a guilt offering to the Lord for the sin that he has committed: a female goat or sheep from the flock as a sin offering. The priest shall make atonement for him and for his sin.

⁷ “If someone cannot afford a lamb, then he shall bring as his guilt offering to the Lord two turtledoves or two pigeons for the sin that he has committed. One will be for a sin offering and the other will be a burnt offering.