Exodus 36:33

And he made the middle bar to pass through the boards from one end to the other.

Surrounding context

36:32 five bars for the boards on the other side of the tabernacle, and five bars for the boards of the tabernacle on the far side westward.

36:33 And he made the middle bar to pass through the boards from one end to the other.

36:34 He overlaid the boards with gold, made their rings of gold to be holders for the bars, and overlaid the bars with gold.

Translation and sources