Exodus 26:17
There shall be two tenons in each board, joined to one another: thus you shall make for all the boards of the tabernacle.
World English Bible (Public Domain)
In context
Before · Exodus 26:15–16
15“You shall make the boards for the tabernacle of acacia wood, standing upright. 16Ten cubits shall be the length of a board, and one and a half cubits the width of each board.
17There shall be two tenons in each board, joined to one another: thus you shall make for all the boards of the tabernacle.