Targum for Genesis 43:33

And they sat around him, the greatest according to his majority, and the less according to his minority. For he had taken the silver cup in his hand, and, sounding as if divining he had set in order the sons of Leah on one side, and the sons of Zilpha on the other side, and the sons of Bilhah on another side, and Benjamin the son of Rahel he ordered by the side of himself. And the men wondered each at the other.