Exodus 25:35

that there be a knop under every two branches of the six that proceed out of the candlestick.

Treasury of Scripture Knowledge

Summary

And there shall be a knop under two branches of the same, and a knop under two branches of the same, and a knop under two branches of the same, according to the six branches that proceed out of the candlestick.

Bible References

General references

Exodus 31:4
to find out subtle feats, to work in gold, silver and brass
Exodus 37:21
under every two branches a knop.
Exodus 40:24
And he put the candlestick in the tabernacle of witness over against the table in the south side of the habitation,