Exodus 26:24
coupled together from bottom to top and fitted into a single ring. These will serve as the two corners.
Berean Standard Bible
And they shall be coupled together beneath, and they shall be coupled together above the head of it unto one ring: thus shall it be for them both; they shall be for the two corners.
They shall be double beneath, and in the same way they shall be whole to its top to one ring: thus shall it be for them both; they shall be for the two corners.