Through the Mental Powers of Zeir Anpin, Abba and Imma are grafted into and rule Zeir Anpin. The Mental Powers of Zeir Anpin are founded on Kindness-Judgment-Mercy, for these make up the entire cycle of government. According to the strength of the Mental Powers, so is the strength of the entire body. Keter of Zeir Anpin is the mystery of Arich Anpin.
Having introduced the subject of Zeir Anpin and Nukva in general we must now examine them in detail, beginning with Zeir Anpin’s Mental Powers – Chochmah-Binah-Daat – and everything related to this. “…Netzach-Hod-Yesod of Imma change from their original nature to become ‘bone of his bones and flesh of his flesh’ of Zeir Anpin himself and are literally like his own body” – Etz Chayim, Shaar HaMochin deTzelem ch. 1. “And Tiferet of Arich Anpin turns into the Keter and Skull of Zeir Anpin” – ibid. Shaar Arich Anpin ch. 7.