Leviticus 7:29-32

29“Speak to Bnei-Yisrael, saying: Whoever brings the sacrifice of his fellowship offerings to Adonai is to present his offering to Adonai out of the sacrifice of his fellowship offerings.

30With his own hands he is to bring Adonai’s offerings by fire. He is to present the fat with the breast, so that the breast may be waved for a wave offering before Adonai.

31The kohen is to burn up the fat as smoke on the altar, but the breast will belong to Aaron and his sons.

32The right thigh you are to give to the kohen for a contribution out of the sacrifices of your fellowship offerings.