פירוש על בראשית 43:34

משאת means PORTIONS OF FOOD.

ותרב, as if the Torah had written ותרבה. The meaning is that Binyamin’s gift from Joseph was far greater than the gift received by his brothers. A parallel construction to the word vaterev appears in connection with the construction of the Tabernacle ותכל, vatechel, where it means that the construction had been completed (Exodus 39,32).

ותרב משאת בנימין, to see if the brothers would display signs of jealousy.