King James Version
Only the land of the priests bought he not; for the priests had a portion assigned them of Pharaoh, and did eat their portion which Pharaoh gave them: wherefore they sold not their lands.English Standard Version
Only the land of the priests he did not buy, for the priests had a fixed allowance from Pharaoh and lived on the allowance that Pharaoh gave them; therefore they did not sell their land.New International Version
However, he did not buy the land of the priests, because they received a regular allotment from Pharaoh and had food enough from the allotment Pharaoh gave them. That is why they did not sell their land.