'Priests' in the Bible

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.

Joseph made it a statute concerning the land of Egypt valid to this day, that Pharaoh should have the fifth; only the land of the priests did not become Pharaoh’s.