Exodus 26:3-5

Revised Standard Version

³ Five curtains shall be coupled to one another; and the other five curtains shall be coupled to one another. ⁴ And you shall make loops of blue on the edge of the outmost curtain in the first set; and likewise you shall make loops on the edge of the outmost curtain in the second set. ⁵ Fifty loops you shall make on the one curtain, and fifty loops you shall make on the edge of the curtain that is in the second set; the loops shall be opposite one another.