Leviticus 4:16-18

16And the priest that is anointed shall bring of the bullock’s blood to the tabernacle of the congregation:

17And the priest shall dip his finger in some of the blood, and sprinkle it seven times before Yhwh, even before the vail.

18And he shall put some of the blood upon the horns of the altar which is before Yhwh, 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.