The purpose of the various repairs… All the different kinds of repairs found in all places fall under one of the following two categories.
…is in some cases to channel the flow of blessing… In the case of the Beard, the repairs that channel the flow of blessing are the Two Mazalot – Notzer, the eighth, and Venakeh, the thirteenth attribute. (“Why is this noble thread – the Beard – called Mazal? Because from it hang constellations and constellations – higher and lower…” – Idra Rabba 134a.) The specific purpose of the Two Mazalot is to draw down and reveal the light of Arich Anpin in Zeir Anpin.