Yechezkel 41:3-5

Orthodox Jewish Bible

³ Then he went into the Penimah (the Innermost [Holy of Holies]), and measured the jamb of the Petach, two cubits; and the Petach, six cubits; and the width of the Petach, sheva (seven) cubits.

⁴ So he measured the depth thereof, twenty cubits; and the width, twenty cubits, along the Heikhal; and he [the angelic being] said unto me, This is the Kodesh HaKodashim.

⁵ After he [the angelic being] measured the wall of the Beis [HaMikdash], six cubits; and the width of every tzela (side chamber, cell), four cubits, around the Beis [HaMikdash] on every side.