Leviticus 5:12-13

12Then shall he bring it to the priest, and the priest shall take his handful of it, even a memorial of it, and burn it on the altar, according to the offerings made by fire to the LORD: it is a sin offering. 13And the priest shall make an atonement for him as concerning his sin that he hath sinned in one of these, and it shall be forgiven him: and the remnant shall be the priest’s, as a meat offering.