Genesis 42:3-6

So ten of Joseph’s brothers went down to buy grain in Egypt. But Jacob did not send Benjamin, Joseph’s [younger] brother, with his brothers, for he said, “I am afraid that some harm or injury may come to him.” So the sons of Israel came [to Egypt] to buy grain along with the others who were coming, for famine was in the land of Canaan also. Now Joseph was the ruler over the land, and he was the one who sold [grain] to all the people of the land; and Joseph’s [half] brothers came and bowed down before him with their faces to the ground.