Or HaChaim on Genesis 43:3/אור החיים על בראשית מ״ג:ג׳

1 ויאמר אליו יהודה לאמור, Yehudah said to him, saying, etc. The word לאמור here seems to mean that Yehudah made a variety of suggestions to Jacob all of which were in the nature of a reply to Jacob's arguments against sending Benjamin to Egypt. The most important of these was the reference to the Egyptian ruler's warning that the brothers would not be able to see him (and buy grain) unless they had their younger brother with them. The Torah implies that the brothers did not resort to another reply, namely that they would take Benjamin with them regardless of whether Jacob approved or not. The word לאמור then means they waited for Jacob's word, i.e. permission.

2Alternatively, one could read the words העד…לאמור together. It would mean that Joseph had not only warned them but had done so in the presence of witnesses in order to make his threat more potent. Yehudah may also have challenged Jacob to give him another answer if he had one. After all they also had to consider the very real danger to Shimon who was being held as a hostage in a spy case. How did Jacob suggest that the brothers clear themselves of the suspicion of being spies?

3לא תראו פני "you will not see me." Yehudah thereby denied Jacob's claims that he had adequate proofs to convince any king or royal adviser that the brothers could not be considered spies, and that this would suffice to neutralise Joseph's accusation against them. Yehudah told his father that Joseph had made it plain that the brothers would not even be able to present their case unless Benjamin appeared at their side. How then could they buy grain if they could not even secure an audience with the ruler who was in charge of the grain sales? Yehudah repeated the words העד העיד to convince his father that Benjamin's presence in Egypt was the key to any success of their trip.