Leviticus 7:35-38

35This is the consecrated portion for Aaron and his sons, from the offerings made by fire to the Lord, on the day when Moses presented them to minister to the Lord as priests.

36The Lord commanded this to be given to them by the children of Israel, on the day that He anointed them, by a statute forever throughout their generations.

37This is the law of the burnt offering, the grain offering, the sin offering, the trespass offering, the consecrations, and the sacrifice of the peace offering,

38which the Lord commanded Moses on Mount Sinai, on the day when He commanded the children of Israel to offer their offerings to the Lord in the Wilderness of Sinai.