وَهَذَا عَمَلُ ٱلْقَوَاعِدِ: لَهَا أَتْرَاسٌ، وَٱلْأَتْرَاسُ بَيْنَ ٱلْحَوَاجِبِ.
And the work of the bases was on this manner: they had borders, and the borders were between the ledges: