Construction of the Female of Zeir Anpin to be face to face Malchut was then separated from the side of Zeir Anpin by sawing (as explained in the Greater Gathering, section 324), and she came to join him face to face. When they are joined, they seem a veritable single body, because originally, they are the right and left of a single level. Even though they were separated and constructed as two levels, they rejoin as a single body, the right and left of a single level.
We have learned from this regarding people’s souls that the male by himself seem like half a body, that is, the right part of the soul that is wholly Chesed. The female of the soul as well is the left portion and is wholly Gvurah. When they join, it all seems like a single body, because the two halves join into one. And this is truly so.
Here too, the Male that is Zeir Anpin unites with Malchut, it is all one body. All the worlds are then in a state of joy because they are blessed by a whole body. This is the second stage of Malchut, explained above.