Binyamin, the righteous, wrapped the bread and blessed. Blessed is the Merciful One, Master of this bread. And Rava said, "He has fulfilled his obligation." [And it was asked, did not Rava say that any blessing which does not contain the mention of the Name... (Berakhot 40b)?]
Seder_HaDorot,_Tanaim_and_Amoraim.763:1