Ezekiel 41:10

A chamber with its doorway was by the side pillars at the gates; there they rinse the burnt offering.

Then he measured the wall of the house of Yahweh, six cubits; and the width of the side chambers, four cubits, all around about the house on every side.

Opposite the twenty cubits which belonged to the inner court, and opposite the pavement which belonged to the outer court, was gallery corresponding to gallery in three stories.

Then a measuring rod like a staff was given to me, saying, “Get up and measure the sanctuary of God and the altar, and those who worship in it.