Matthew Poole and continuators on Genesis 39:6

6 And he left all that he had, in Josephs hand: and he knew not ought he had, save the bread which he did eat : and Joseph was a goodly person, and well-favoured.

He took care for nothing, but that he might eat and drink and fare deliciously. Nor did he indeed take any care for that, it being provided for him by other hands. Others thus, he took care for nothing, but committed all to Ioseph, except his bread, which he would not have provided by an Hebrew hand, because the Egyptians might not eat bread with the Hebrews, Gen. 43. 32. But that was no impediment, for neither did Ioseph eat with his master, nor was he the cook to dress it for him. But he might provide food for him, as afterwards he did for all the Egyptians without any scruple on their side.