Genesis 47:20-25

So Joseph bought all the land of Egypt for Pharaoh, for every Egyptian sold his field, because the famine was severe upon them. Thus the land became Pharaoh’s. As for the people, he removed them to the cities from one end of Egypt’s border to the other. Only the land of the priests he did not buy, for the priests had an allotment from Pharaoh, and they lived off the allotment which Pharaoh gave them. Therefore, they did not sell their land. Then Joseph said to the people, “Behold, I have today bought you and your land for Pharaoh; now, here is seed for you, and you may sow the land. At the harvest you shall give a fifth to Pharaoh, and four-fifths shall be your own for seed of the field and for your food and for those of your households and as food for your little ones.” So they said, “You have saved our lives! Let us find favor in the sight of my lord, and we will be Pharaoh’s slaves.”