Ezekiel 40:28, 44, 47

Then he brought me to the inner court by the south gate; and he measured the south gate according to those same measurements.

From the outside to the inner gate were chambers for the singers in the inner court, one of which was at the side of the north gate, with its front toward the south, and one at the side of the south gate facing toward the north.

He measured the court, a perfect square, a hundred cubits long and a hundred cubits wide; and the altar was in front of the temple.