Exodus 26:4

2The length of each curtain shall be twenty-eight cubits, and the width of each curtain four cubits: all the curtains shall have one measure.

3Five curtains shall be coupled together to one another, and the other five curtains shall be coupled to one another.

4You shall make loops of blue on the edge of the one curtain from the edge in the coupling, and you shall do likewise on the edge of the curtain that is outermost in the second coupling.

5You shall make fifty loops in the one curtain, and you shall make fifty loops in the edge of the curtain that is in the second coupling. The loops shall be opposite one another.

6You shall make fifty clasps of gold, and couple the curtains to one another with the clasps. The tabernacle shall be a unit.