Exodus 25:35

and a knob under two branches of it, and again a knob under two branches of it, and again a knob under two branches of it, for the six branches that proceed out of the lamp-stand.

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 devise artistic work to work in gold, and in silver, and in copper,
Exodus 37:21
and a knob under two branches thereof, and again a knob under two branches thereof, and again a knob under two branches thereof, for the six branches which went out of it.
Exodus 40:24
And he put the candlestick in the tent of meeting, opposite to the table, on the side of the tabernacle southward.