חסידות אויף בראשית 43:29

And therefore Ya`akov -- who is the idea of intellect as mentioned above -- therefore he merited to grace, as is written (Gen 33): "Because Elohim has dealt graciously with me" etc. And therefore he blessed the tribes with grace, as is written (there): "The children which Elohim has graciously given" etc. And Binyamin was not born yet, and therefore Yosef [later] blessed him with grace, as is written (there, 43): "Elohim be gracious unto you, my son."