Ezekiel 42:7-9

New Revised Standard Version, Anglicised Catholic Edition

⁷ There was a wall outside parallel to the chambers, towards the outer court, opposite the chambers, fifty cubits long. ⁸ For the chambers on the outer court were fifty cubits long, while those opposite the temple were one hundred cubits long. ⁹ At the foot of these chambers ran a passage that one entered from the east in order to enter them from the outer court.