Genesis 47:24-26

Revised Standard Version

²⁴ And at the harvests you shall give a fifth to Pharaoh, and four fifths shall be your own, as seed for the field and as food for yourselves and your households, and as food for your little ones.” ²⁵ And they said, “You have saved our lives; may it please my lord, we will be slaves to Pharaoh.” ²⁶ So Joseph made it a statute concerning the land of Egypt, and it stands to this day, that Pharaoh should have the fifth; the land of the priests alone did not become Pharaoh’s.