Ezekiel 48:12-14

12And this offering heaved from the heave-offering of the land shall be unto them a thing most holy, by the border of the Levites.

13And answering to the border of the priests, the Levites shall have five and twenty thousand in length, and ten thousand in breadth: the whole length shall be five and twenty thousand, and the breadth ten thousand.

14And they shall not sell of it, neither exchange, nor alienate the first-fruits of the land: for it is holy unto Jehovah.