And the breasts and the right shoulder,.... The breasts of the bullock and the ram, and the right shoulders of them both:
Aaron waved for a wave offering before the Lord; which was given to him as his part of the peace offerings, after they had been thus waved before the Lord; whereby an acknowledgment was made that he was Lord of all, and had a right to all they had; in token of which these parts were given to his priests towards their maintenance:
as Moses commanded; see Exodus 29:27.