Shemot 39:21-23

Orthodox Jewish Bible

²¹ And they did bind the Choshen by its rings unto the rings of the Ephod with a turquoise woolen cord, that it might be above the Cheishev HaEphod, and that the Choshen might not be loosed from the Ephod; as Hashem commanded Moshe.

²² And he made the Me’il HaEphod of artistic weaver’s work, all of turquoise wool.

²³ And there was a head opening in the top of the Me’il, in its center, like the opening of a coat of mail, with a border all around about the head opening, that it should not be torn.