Kommentar zu Bereschit 39:22

הוא היה עושה HE WAS THE DOER OF IT — understand this as the Targum does: it was done at his command.

הוא היה עושה, which he was doing. Onkelos translates: על מימריה הוה מתעבד, that what was done inside the jail was done at Joseph's instructions. If that was so, why does the Torah not say so outright, i.e. ועל פיו היו עושים? Perhaps the Torah wanted to hint that though Joseph enjoyed great authority within the jail, he did not use it to make the other inmates feel as if he dictated to them. He did not claim any special privileges for himself either. All this was evidence of his good character.

As Onkelos translates it: It was done at his command. It means he had slaves under him, whom he told what to do — i.e., “It was done at his command.” It does not mean that he did what had to be done, for then he would be their servant. And that is not, “Granting him favor in the eyes of the prison chief.”

Alles, was sie dort taten, hatte er getan, oder tat es. Entweder war es eigentlich durch ihn geschehen, er hatte es versorgt, oder: was sonst viele tun mussten, tat er allein.