Numbers 15:37-40 ~ The LORD said . . . “Throughout the generations to come you are to make tassels (‘tzitziot’) on the corners of your garments, with a blue cord on each tzitzit. You will look upon them to remember all the commands of the LORD.”
Deuteronomy 22:12 ~ “You are to make for yourself twisted cords on the four corners of the garment you wrap around yourself.”
Sephardic wrapping of tzitzit uses the numbers equivalent to the Hebrew letters of the sacred Name: Y H V H ~ 10 5 6 5
To make, cut 3 equal lengths of cord (around 3’ each); double them in half. Cut another half length, and knot it with a whole length of blue cord.
Tie a double knot around a loop in the center of the 4 cords. Wrap 10 times (‘yod’), pulling through each wrap to hold it.
Double knot and wrap 5 times (‘hey’). Double knot and wrap 6 times (‘vav’). Double knot and wrap 5 times (‘hey’); may finish with a double knot. Trim white cords, leaving the blue cord a bit longer.