Exodus 36:8-12

All the skillful people among those who were performing the work made the tabernacle with ten curtains; of fine twisted linen and violet, purple, and scarlet material, with cherubim, the work of a skilled embroiderer, Bezalel made them.

The length of each curtain was twenty-eight cubits, and the width of each curtain four cubits; all the curtains had the same measurements.

He joined five curtains to one another, and the other five curtains he joined to one another.

And he made loops of violet on the edge of the outermost curtain in the first set; he did likewise on the edge of the curtain that was outermost in the second set.

He made fifty loops in the one curtain, and he made fifty loops on the edge of the curtain that was in the second set; the loops were opposite each other.