Imamat 7:33-34

7:33 The one from Aaron’s sons who presents the blood of the peace offering and fat will have the right thigh as his share, 7:34 for the breast of the wave offering and the thigh of the contribution offering I have taken from the Israelites out of their peace offering sacrifices and have given them to Aaron the priest and to his sons from the people of Israel as a perpetual allotted portion.’” ¹ 

[7:34]  ¹ tn Or “a perpetual regulation”; cf. NASB “as their due forever”; NRSV “as a perpetual due”; NLT “their regular share.”