Leviticus 7:29-30

7:29 “Tell the Israelites, ‘The one who presents his peace offering sacrifice to the Lord must bring his offering to the Lord from his peace offering sacrifice. 7:30 With his own hands he must bring the Lord’s gifts. He must bring the fat with the breast to wave the breast as a wave offering before the Lord,

Leviticus 7:34

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.’”