Exodus 25:14

And thou shalt put the staves into the rings by the sides of the ark, that the ark may be borne with them.

Cross-reference

Exodus 25:27 gives parallel instructions for the table's rings, using the same 'staves in rings' design as the ark.

Exodus 25:28 specifies staves for the table, echoing the same construction method used for the ark.

Exodus 30:4 describes rings and staves for the incense altar, following the same pattern as the ark's rings.

1 Kings 8:8 describes the ark's staves drawn out so ends were visible in the temple, showing they remained in place as instructed.