Shemot 36:11-13

Orthodox Jewish Bible

¹¹ And he made loops of turquoise wool on the edge of one curtain at the end of the first set; likewise he made them along the edge of the end curtains of the second set.

¹² Fifty loops made he in one curtain, and fifty loops made he in the end curtain in the second set; the loops were to be opposite one another.

¹³ And he made fifty hooks of zahav, and joined the curtains one unto another with the hooks; so it became Mishkan Echad.