פירוש על מלכים א 6:16

The twenty amohs at the end of the Beis Hamikdosh. The twenty [amohs] which were at the end of the Sanctuary and beyond, and the twenty [amohs] which were at the end of the building, they are the house containing the Ark cover (i.e., the Holy of Holies).

To the ceiling. He made the walls of cedar until the ceiling to cover the walls of stone in order to coat it with gold.

He built it. Those twenty amohs.