Numbers 15:38

Speak unto the children of Israel and bid them that they make them fringes in the borders of their garments, blossomlike ornaments of twisted cords or tassels, in the four corners of the upper garment, which was used as a throw, or mantle, Deuteronomy 22:12, throughout their generations, and that they put upon the fringe of the borders a riband of blue, fasten the tassels to the edge of the garment with a hyacinth-colored thread;