And Joseph made it a law over the land of Egypt to this day, that Pharaoh should have one-fifth, except for the land of the priests only, which did not become Pharaoh's.
Genesis 47:26
Surrounding context
47:25 So they said, "You have saved our lives; let us find favor in the sight of my lord, and we will be Pharaoh's servants."
47:26 And Joseph made it a law over the land of Egypt to this day, that Pharaoh should have one-fifth, except for the land of the priests only, which did not become Pharaoh's.
47:27 So Israel dwelt in the land of Egypt, in the country of Goshen; and they had possessions there and grew and multiplied exceedingly.