Leviticus 4:5-7

5The high priest will then take some of the bull’s blood into the Tabernacle,

6dip his finger in the blood, and sprinkle it seven times before the Lord in front of the inner curtain of the sanctuary.

7The priest will then put some of the blood on the horns of the altar for fragrant incense that stands in the Lord’s presence inside the Tabernacle. He will pour out the rest of the bull’s blood at the base of the altar for burnt offerings at the entrance of the Tabernacle.