Leviticus 7:34-36

34From the fellowship offerings of the Israelites, I have taken the breast that was presented ⌞to me⌟ and the thigh from the contribution offering. I have given them to the priest Aaron and his sons. This is a permanent law for generations to come.

35“This is the share for Aaron and his sons from the sacrifices by fire made to the Lord. It was given to them on the day Moses ordained them to serve the Lord as priests.

36The Lord commanded the Israelites to give it to them on the day he anointed them. This is a permanent law for generations to come.”