COMMENTARY on 12:88
A. Yusuf Ali:

Translation:
Then, when they came (back) into (Joseph´s) presence 1764 they said: "O exalted one! distress has seized us and our family: we have (now) brought but scanty capital: so pay us full measure, (we pray you), and treat it as charity to us: for Allah do reward the charitable."
Commentary:

1764  The nine brothers come back to Egypt according to their father's direction. Their first care is to see the WazTr. They must tell him of all their father's distress and excite his pity, if perchance he might release Benjamin. They would describe the father's special mental distress as well as the distress which was the common lot of all in famine time. They had spent a great part of their capital and stock in trade. They would appeal to his charity. It might please so great a man, the absolute governor of a wealthy state. And they did so. Perhaps they mentioned their father's touching faith, and that brought Joseph out of his shell, as in the next verse.

 

Muhammad Asad:

Translation:
[AND THE SONS of Jacob went back to Egypt and to Joseph;] and when they presented themselves before him, they said: "O thou great one! Hardship has visited us and our folk, and so we have brought but scanty merchandise; 89 but give us a full measure [of grain], and be charitable to us: behold, God rewards those who give in charity!"
Commentary:
89  I.e., goods which they intended to barter for grain (see note 60 above).