Part 13 · Chapter 197

Now the ten internal [Sefirot] stand one above the other, in their order — Keter, Hochma, Bina, etc., down to the last Malchut — and they hold the measure of the place that holds and bears the thirteen encompassing lights, and their measure is equal. And this is the secret of the hairs of the beard, that the lights go out through the apertures of the hairs and shine in the manner of encompassing [lights].