Exodus 25:35
For the six branches that extend from the lampstand, a calyx must be under the first pair of branches from it, a calyx under the second pair of branches from it, and a calyx under the third pair of branches from it.
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.                        
                    General references
Bible References
General references
                                        Exodus 31:4                                        
                                                                                                                                to design artistic works in gold, silver, and bronze, 
                                    
                                        Exodus 37:21                                        
                                                                                                                                For the six branches that extended from it, a calyx was under the first pair of branches from it, a calyx under the second pair of branches from it, and a calyx under the third pair of branches from it. 
                                    
                                        Exodus 40:24                                        
                                                            
                        He also put the lampstand in the tent of meeting opposite the table on the south side of the tabernacle