Leviticus 4:6-7

⁶And the priest shall dip his finger in the blood; and he shall sprinkle of the blood seven times before the Lord, before the vail of the sanctuary.

⁷And the priest shall put some of the blood upon the horns of the altar of the incense of spices before the Lord, which is in the tabernacle of the congregation; and all the remaining blood of the bullock shall he pour out at the bottom of the altar of burnt-offering, which is at the door of the tabernacle of the congregation.