Exodus 26:3-5

Amplified Bible

³ The five curtains shall be joined to one another, and the other five curtains shall be joined to one another. ⁴ You shall make loops of blue on the outer edge of the last curtain in the first set, and likewise in the second set. ⁵ You shall make fifty loops on the one curtain, and fifty loops on the edge of the last curtain that is in the second set. The loops on one curtain correspond to the loops on the other.