Leviticus 4:17-20

¹⁷The priest shall dip his finger in the blood and sprinkle it seven times before Yahweh, before the veil.

¹⁸He shall put some of the blood on the horns of the altar which is before Yahweh, that is in the Tent of Meeting; and the rest of the blood he shall pour out at the base of the altar of burnt offering, which is at the door of the Tent of Meeting.

¹⁹All its fat he shall take from it, and burn it on the altar.

²⁰He shall do this with the bull; as he did with the bull of the sin offering, so he shall do with this; and the priest shall make atonement for them, and they shall be forgiven.