Kings III 6:15-16

¹⁵And he framed the walls of the house within with cedar boards, from the floor of the house and on to the inner walls and to the beams: he lined the parts enclosed with boards within, and compassed the inward parts of the house with planks of fir.

¹⁶And he built the twenty cubits from the top of the wall, one side from the floor to the beams, and he made it from the oracle to the most holy place.