Normally the right thigh (Leviticus 7:31–33) and the bread (Leviticus 7:11–14) would be eaten by the priests. However, at the ordination ceremony these elements are presented on the priests’ behalf. As such, they are not allowed to consume any part of the sacrifice. Moses receives these portions as the officiating priest and only then gives them to Aaron and his sons.
25 Il prit la graisse, la queue, toute la graisse qui couvre les entrailles, le grand lobe du foie, les deux rognons avec leur graisse, et l'épaule droite;