Leviticus 16:15

In front of the propitiatory he shall sprinkle some of the blood seven times with his finger. Then he shall kill the goat for a sin offering—that for the people, before the Lord, and he shall carry some of its blood within the veil, and do with the blood thereof as he did with the blood of the bull, and sprinkle the blood thereof on the propitiatory, in front of the propitiatory,