Exodus 26:4-5 ▼

4 And you have made loops of blue on the edge of the first curtain, at the end in the joining; and so you make in the edge of the outermost curtain, in the joining of the second.

5 You make fifty loops in the first curtain, and you make fifty loops in the edge of the curtain which [is] in the joining of the second, causing the loops to take hold to one another;