Leviticus 9:3-9

³And with the sons of Israel he spake, saying, Take a kid of the goats for a sin offering, and a calf, and a lamb of the year, unblemished, for a burnt offering,

⁴To sacrifice before the Lord; and a mincha of flour sprinkled with oil: for this day will the glory of the Lord be revealed to you.

⁵And what Mosheh had commanded they brought before the tabernacle of ordinance, and all the congregation approached and stood before the Lord.

⁶And Mosheh said, This is the thing that the Lord hath commanded to be done, and the glory of the Lord shall be revealed to you.

⁷And Mosheh said to Aharon, Approach the altar, and make thy sin offering and thy burnt sacrifice, and make atonement for thyself and for the people, and perform the oblation of the people, and make atonement for them, as the Lord commanded.

⁸And Aharon drew near to the altar, and slew the calf for the sin offering for himself.

⁹And the sons of Aharon brought the blood to him, and he dipped his finger in the blood, and put it upon the horns of the altar, and poured out the blood at the base of the altar.