Ezekiel 48:21

21 Whatever is left on the east side and west side of the holy area and the city property will belong to the prince. This land will extend eastward from the holy area to the eastern border, and it will extend westward to the western border. Both of these areas are as long as one of the sections of the tribes. These areas belong to the prince, and the holy area with the holy place of the temple will be between them.