Leviticus 7:30-33

30With his own hands he is to bring offerings by fire to the Lord; he shall bring the fat with the breast, so that the breast may be presented as a wave offering before the Lord.

31The priest shall offer up the fat in smoke on the altar, but the breast shall be for Aaron and his sons.

32You shall give the right thigh to the priest as a contribution from the sacrifices of your peace offerings.

33The son of Aaron who offers the blood of the peace offerings and the fat shall have the right thigh as his portion.