And he measured the length of the inner sanctuary; it was twenty cubits, and its width was twenty cubits across the end of the main hall. He said to me, "This is the Most Holy Place."
NIV
And he measured the length [of the interior of the second room] in the temple proper, twenty cubits, and the breadth, twenty cubits; and he [came out and] said to me, This is the Most Holy Place (the Holy of Holies).
AMP
So he measured the length thereof, twenty cubits; and the breadth, twenty cubits, before the temple: and he said unto me, This is the most holy place.
KJV