Leviticus 4:18 in the King James Version
And he shall put some of the blood upon the horns of the altar which is before the LORD, that is in the tabernacle of the congregation, and shall pour out all the blood at the bottom of the altar of the burnt offering, which is at the door of the tabernacle of the congregation.
Context
17 The priest shall dip his finger in the blood and sprinkle it seven times before the LORD, before the veil.
18 He shall put some of the blood on the horns of the altar which is before the LORD, 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.
19 All its fat he shall take from it, and burn it on the altar.