Leviticus 16:11-15

“Also Aaron is to present the bull of the sin offering which is for himself and so make atonement for himself and his house. He is to slaughter the bull of the sin offering which is for himself. He is to take a firepan full of coals of fire from off the altar before ADONAI plus two handfuls of sweet powdered incense and bring it within the curtain. Then he is to put the incense on the fire before ADONAI, so that the cloud of the incense may cover the atonement cover that is on the Ark, so that he would not die. He is then to take some of the blood of the bull and sprinkle it with his finger on the atonement cover, on the east side. Before the atonement cover he is to sprinkle some of the blood with his finger seven times. “Then he is to slaughter the goat of the sin offering which is for the people, bring its blood behind the curtain, and do with it as he did with the blood of the bull—sprinkle it upon the atonement cover, and before the atonement cover.