Leviticus 5:3-7

³or should touch the uncleanness of a man, of whatever kind, which he may touch and be defiled by, and it should have escaped him, but afterward he should know—then he shall have transgressed.

⁴That unrighteous soul, which determines with his lips to do evil or to do good according to whatsoever a man may determine with an oath, and it shall have escaped his notice, and he shall afterward know it, and so he should sin in some one of these things—

⁵then shall he declare his sin in the things wherein he has sinned by that sin.

⁶And he shall bring for his transgressions against the Lord, for his sin which he has sinned, a ewe lamb of the flock, or a kid of the goats, for a sin offering; and the priest shall make an atonement for him for his sin which he has sinned, and his sin shall be forgiven him.

⁷And if he cannot afford a sheep, he shall bring for his sin which he has sinned, two turtledoves or two young pigeons to the Lord; one for a sin offering, and the other for a burnt offering.