Leviticus 5:6, 9, 12

he shall bring to the LORD as his compensation for the sin that he has committed, a female from the flock, a lamb or a goat, for a sin offering. And the priest shall make atonement for him for his sin.

and he shall sprinkle some of the blood of the sin offering on the side of the altar, while the rest of the blood shall be drained out at the base of the altar; it is a sin offering.

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.