Exodus 29:26

And thou shalt take the breast of the ram of Aaron's
consecrations
The ram being slain and cut to pieces, this part is particularly disposed of:

and wave it for a wave offering before the Lord;
in the manner before described:

and it shall be thy part:
the part of Moses, he officiating now as a priest; and we find accordingly in later times that this part of the sacrifice belonged to the priest, ( Leviticus 7:31 ) .