Genesis 42:6

He sold to the people; either,

1. By his ministers and commissioners appointed to that end, as men in Scripture and in all authors are said to do that which others do by their authority and command. Or,

2. He himself immediately contracted with the buyers, or at least with such as were foreigners; which he did upon prudential reasons; both because he would not have them to pry into the state of Egypt, Genesis 42:12, and because he would by that opportunity understand the state of other lands, and improve that knowledge for his master's service. Joseph's brethren bowed down themselves before him; thus unwittingly fulfilling Joseph's dream, Genesis 37:7.