Leviticus 5:9-10

MKJV(i) 9 And he shall sprinkle of the blood of the sin offering on the side of the altar, and the rest of the blood shall be drained at the bottom of the altar. It is a sin offering. 10 And he shall offer the second for a burnt offering, according to the ordinance. And the priest shall make an atonement for him for his sin which he has sinned, and it shall be forgiven him.