Genesis 47:24-26

Young's Literal Translation

²⁴ and it hath come to pass in the increases, that ye have given a fifth to Pharaoh, and four of the parts are for yourselves, for seed of the field, and for your food, and for those who [are] in your houses, and for food for your infants.'

²⁵ And they say, `Thou hast revived us; we find grace in the eyes of my lord, and have been servants to Pharaoh;'

²⁶ and Joseph setteth it for a statute unto this day, concerning the ground of Egypt, [that] Pharaoh hath a fifth; only the ground of the priests alone hath not become Pharaoh's.