Leviticus 8:14-15 ▼

14 Then he brought the bull of the sin offering, and Aaron and his sons laid their hands on the head of the bull of the sin offering.

15 Next Moses slaughtered it and took the blood and with his finger put some of it around on the horns of the altar and purified the altar. Then he poured out the rest of the blood at the base of the altar and set it apart as holy, to make atonement for it.