Leviticus 7:35-38

35This is the portion of the anointing of Aaron, and of the anointing of his sons, out of the offerings of the LORD made by fire, in the day when he presented them to minister to the LORD in the priest’s office; 36Which the LORD commanded to be given to them by the children of Israel, in the day that he anointed them, by a statute for ever throughout their generations. 37This is the law of the burnt offering, of the meat offering, and of the sin offering, and of the trespass offering, and of the consecrations, and of the sacrifice of the peace offerings; 38Which the LORD commanded Moses in mount Sinai, in the day that he commanded the children of Israel to offer their oblations to the LORD, in the wilderness of Sinai.