Leviticus 5:10, 12, 18

Then he shall offer the second for a burnt offering according to the rule. And the priest shall make atonement for him for the sin that he has committed, and he shall be forgiven.

And he shall bring it to the priest, and the priest shall take a handful of it as its memorial portion and burn this on the altar, on the LORD’s food offerings; it is a sin offering.

He shall bring to the priest a ram without blemish out of the flock, or its equivalent, for a guilt offering, and the priest shall make atonement for him for the mistake that he made unintentionally, and he shall be forgiven.