Exodus 36:17 KJV
And he made fifty loops upon the uttermost edge of the curtain in the coupling, and fifty loops made he upon the edge of the curtain which coupleth the second.
Exodus 36:17, King James Version
In context
16 And he coupled five curtains by themselves, and six curtains by themselves.
17 And he made fifty loops upon the uttermost edge of the curtain in the coupling, and fifty loops made he upon the edge of the curtain which coupleth the second.
18 And he made fifty taches of brass to couple the tent together, that it might be one.