Ezekiel 45:2-4

New Catholic Bible

² Of this land, a plot, five hundred cubits square, shall be set aside for the sanctuary, and that plot will be surrounded by an open space of fifty cubits.

³ Out of this area you must also set aside a section twenty-five thousand cubits long and ten thousand cubits wide, within which will be the sanctuary, the Holy of Holies. ⁴ This will be the sacred portion of the land belonging to the priests who minister in the sanctuary and approach the Lord to serve him. It will be both a place for their houses as well as a holy place for the sanctuary.