Leviticus 7:32; Leviticus 7:34

32 And the right thigh you shall give to the priest as a contribution from the sacrifice of your peace offerings.

34 For the breast that is waved and the thigh that is contributed I have taken from the people of Israel, out of the sacrifices of their peace offerings, and have given them to Aaron the priest and to his sons, as a perpetual due from the people of Israel.