Genesis 42:3-6

And Joseph’s ten brethren went down to buy grain from Egypt. But Benjamin, Joseph’s brother, Jacob sent not with his brethren; for he said, Lest peradventure harm befall him. And the sons of Israel came to buy among those that came: for the famine was in the land of Canaan. And Joseph was the governor over the land; he it was that sold to all the people of the land. And Joseph’s brethren came, and bowed down themselves to him with their faces to the earth.