Abba and Imma must clothe within their Malchut – which is called the back parts of their Netzach-Hod-Yesod – the adornments that they have to give to Zeir Anpin, these being his Mental Powers. This is similar to all other cases where a higher Partzuf gives Mental Powers to a lower one. And when Abba and Imma themselves give the Mental Powers to Zeir Anpin with no further subdivision, their Malchut clothes itself in Zeir Anpin’s Tzelem, and the lowest part of this Malchut becomes interior in Zeir Anpin while the two upper parts are encompassing levels. This is called the First Israel Sabba-Tevunah.