Leviticus 8:2

8:2 “Take Aaron and his sons with him, and the garments, the anointing oil, the sin offering bull, the two rams, and the basket of unleavened bread,

Leviticus 8:14-15

Consecration Offerings

8:14 Then he brought near the sin offering bull and Aaron and his sons laid their hands on the head of the sin offering bull, 8:15 and he slaughtered it. Moses then took the blood and put it all around on the horns of the altar with his finger and decontaminated the altar, and he poured out the rest of the blood at the base of the altar and so consecrated it to make atonement on it.