Rabbi
Moshe Chaim Luzzatto ("RaMChaL"):
138 Openings
of Wisdom
Opening 117
The entry of Abba and Imma into Zeir Anpin generates additional Partzufim: Jacob and Leah and the diagonals.
Through the power of the engrafting of the Mental Powers in Zeir Anpin, various kinds of radiations emerge from Zeir Anpin himself. Likewise, the hind parts of Abba and Imma themselves - which descended to the place of Zeir Anpin and Nukva - become rectified as Partzufim and supplement Zeir Anpin and the Nukva. Sometimes both are needed as supplements, sometimes only one.
Following our discussion of the Mental Powers, we will now examine what arises out of them.
Through the power of the engrafting of the Mental Powers in Zeir Anpin. There are lights that come forth in their own right rather than as the result of a specific engrafting: these are the Ten Sefirot of any given world with all their respective repairs and arrangements (such as the Ten Sefirot of the world of Atzilut, which divide up into the five principal Partzufim: Arich Anpin, Abba, Imma, Zeir Anpin=Israel and Nukva=Rachel). However, there are also additional Partzufim which are lights emanated as a result of the engrafting of Abba and Imma in Zeir Anpin.
.various kinds of radiations emerge from Zeir Anpin himself. These are the staffs (Heb. matot) mentioned in their place and the other diagonals. (These are the staffs of Jacob and Leah, and Leah of the Generation of the Wilderness, the Clouds of Glory, the Manna, the Staff of God, the Staff of Moses, the Mixed Multitude and Esau - see Etz Chayim, Shaar He'arat Hamochin ch's 1-2; Klalut HaIlan 7:4).
These are nothing but a radiation of the Mental Powers as they settle in Zeir Anpin. The truth is that they radiate on all sides, but where there is a receiver they become absorbed within that receiver. Accordingly, the direct lights go to Rachel, to Leah, to Jacob. (Rachel is the essential Nukva, while Jacob and Leah are made from the hind parts of Abba and Imma, and when Abba and Imma become engrafted in Zeir Anpin through his Mental Powers, Jacob and Leah are there to receive radiations.) However, in a place where there is no receiver, they radiate alone - creating these other Partzufim - the staffs and diagonals.
The governmental order is indeed drawn down directly to the receivers through the main Partzufim that are involved in this - Zeir and Nukva, Jacob and Leah - while these other radiations - the diagonals - are subordinate to them. Nevertheless, these other radiations also give rise to certain consequences in the government, but they come from the sides or at a tangent, as it were, rather than directly. There is some particular reason why these aspects emerge to carry out a unique function in the overall government.
Likewise, the hind parts of Abba and Imma themselves - which descended to the place of Zeir Anpin and Nukva - become rectified as Partzufim. The hind parts of Abba and Imma went down when the vessels broke. In the repair, through the light of Yesod of Imma in Zeir Anpin, the hind parts of Imma become Leah, while the light of Yesod of Abba generates Jacob.
.and supplement Zeir Anpin and Nukva. I.e. in coupling or interaction (Heb. zivug). The main interaction is between Zeir Anpin and Rachel, but there is Zeir Anpin and Leah, Jacob and Leah and Jacob and Rachel.
Sometimes both are needed as supplements. As in the case of the interaction of Jacob and Leah.
.sometimes only one. As in the case of Israel (=Zeir Anpin) and Leah or of Jacob and Rachel.
(I.e. The main Partzufim through which Zeir and Nukva manifest are Israel and Rachel, but sometimes two others come in their place - Jacob and Leah. Sometimes both come, sometimes only one, such as Israel and Leah or Jacob and Rachel.)
The underlying foundation of all this is that the light of Zeir Anpin or the Nukva also shines through Jacob or Leah, in which case the latter supplement and become aspects of Zeir and Nukva. (Earlier it was explained how the Partzufim of Jacob and Leah were instituted - through the repair of the fallen hind parts of Abba and Imma. Now we see that the interaction of Jacob and Leah may come in place of that Zeir and Nukva while the latter radiate through them.)