Page "Benjamin" Paragraph 9

In the narrative, just prior to this test, when Joseph had first met all of his brothers ( but not identified himself to them ), he had held a feast for them ; the narrative heavily implies that Benjamin was Joseph's favorite brother, since he is overcome with tears when he first meets Benjamin in particular, and he gives Benjamin five times as much food as he apportions to the others.

According to textual scholars, this is really the Jahwist's account of the reunion after Joseph identifies himself, and the account of the threat to enslave Benjamin is just the Elohist's version of the same event, with the Elohist being more terse about Joseph's emotions towards Benjamin, merely mentioning that Benjamin was given five times as many gifts as the others.