Exodus 29:26-27
29:26 You are to take the breast of the ram of Aaron’s consecration; you are to wave it as a wave offering before the Lord, and it is to be your share.
29:27 You are to sanctify the breast of the wave offering and the thigh of the contribution, which were waved and lifted up as a contribution from the ram of consecration, from what belongs to Aaron and to his sons.