Genesis 47:26

And Joseph made it a law over the land of Egypt unto this day, that Pharaoh should have the fifth part, except the land of the priests only, which became not Pharaoh's.

Joseph made it a statute concerning the land of Egypt to this day, that Pharaoh should have the fifth. Only the land of the priests alone didn't become Pharaoh's.

And Joseph made it a statute concerning the land of Egypt unto this day, that Pharaoh should have the fifth; only the land of the priests alone became not Pharaoh's.

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.

So Joseph established a law that a fifth of the produce belongs to Pharaoh, and it is in effect in the land of Egypt to this day. Only the priests’ land does not belong to Pharaoh.