Leviticus 4:17-18

ERV(i) 17 and the priest shall dip his finger in the blood, and sprinkle it seven times before the LORD, before the veil. 18 And he shall put of the blood upon the horns of the altar which is before the LORD, that is in the tent of meeting, and all the blood shall he pour out at the base of the altar of burnt offering, which is at the door of the tent of meeting.