Thus during the Pregnancy, Zeir Anpin is three Sefirot – Netzach-Hod-Yesod – with Nukva as the fourth over the Yesod. During Suckling, Chessed-Gevurah-Tiferet are revealed – with Nukva attached to the back parts of Tiferet. In maturity, when Chochmah-Binah-Daat of Zeir Anpin are revealed, Malchut ascends and becomes rooted in Daat. It is true that afterwards Nukva must undergo further building in her own right from Zeir Anpin’s Netzach-Hod-Yesod, this being the main building of the Nukva. But the attachment of Nukva to Zeir Anpin in all his ascents is for the completion and perfection of Zeir Anpin – that is to say that the two of them will always be together.