Leviticus 4:6-7

⁶And the priest shall dip his finger into the blood, and sprinkle of the blood seven times before the Lord, over against the holy veil.

⁷And the priest shall put of the blood of the calf on the horns of the altar of the compound incense which is before the Lord, which is in the tabernacle of witness; and all the blood of the calf shall he pour out by the foot of the altar of whole-burnt-offerings, which is by the doors of the tabernacle of witness.