Exodus 35:12
The ark, and the staves thereof, with the mercy seat, and the vail of the covering,
Cross-reference
Exodus 25:10-22 gave the original instructions for the ark, poles, and mercy seat — this verse repeats that command.
Exodus 26:31-33 gave the original instructions for making the inner veil — the same veil referenced here.
Exodus 36:35 describes the actual making of the veil of blue, purple, and scarlet — directly fulfilling this instruction.
Exodus 37:1-9 records Bezalel making the ark, poles, and mercy seat — the exact execution of this command.
Exodus 40:3 commands placing the ark and screening it with the veil — the final setup of the item listed here.
In Exodus 40:21, Moses sets up the ark and veil inside the tabernacle, completing what the people were commanded to bring materials for here.
Exodus 36:36 describes the four gold-overlaid pillars for hanging the veil — closely associated but not the veil itself.