Leviticus 4:34-35

The Voice

³⁴ The priest must then dip his finger into the blood of the purification offering for sin, put it on the horns of the altar of burnt offering, and then pour the rest of the blood at the base of the altar. ³⁵ The priest is to remove all of its fat in the same manner that the fat is removed from the sacrifice of the peace offerings, and the priest will offer it up on the altar on top of the fire-offering to Me. This is how the priest will make atonement for the sin this person committed, and this is how he will be forgiven.