Genesis 47:20-26

20So Joseph bought all the land of Egypt for Pharaoh. Each of the Egyptians sold his field, for the famine was severe. So the land became Pharaoh’s.

21Joseph made all the people slaves from one end of Egypt’s border to the other end of it.

22But he did not purchase the land of the priests because the priests had an allotment from Pharaoh and they ate from their allotment that Pharaoh gave them. That is why they did not sell their land.

23Joseph said to the people, “Since I have bought you and your land today for Pharaoh, here is seed for you. Cultivate the land.

24When you gather in the crop, give one-fifth of it to Pharaoh, and the rest will be yours for seed for the fields and for you to eat, including those in your households and your little children.”

25They replied, “You have saved our lives! You are showing us favor, and we will be Pharaoh’s slaves.”

26So Joseph made it a statute, which is in effect to this day throughout the land of Egypt: One-fifth belongs to Pharaoh. Only the land of the priests did not become Pharaoh’s.