Leviticus 4:25-27

²⁵And the priest shall take of the blood of the sin-offering with his finger, and put it on the horns of the altar of burnt-offering, and shall pour out its blood at the bottom of the altar of burnt-offering.

²⁶And he shall burn all its fat on the altar, as the fat of the sacrifice of peace-offering; and the priest shall make atonement for him to cleanse him from his sin, and it shall be forgiven him.

²⁷And if any one of the people of the land sin through inadvertence, that he do somewhat against any of the commandments of Jehovah in things which should not be done, and be guilty;