...for all the other Partzufim are literally branches of Arich Anpin... They are not branches of Arich Anpin merely in the way in which they seem to be branches of one another inasmuch as they emerge from one another in the developmental chain. In relation to Arich Anpin, the other Partzufim are actual branches.
...which executes its functions through them. For the entire governmental order is rooted in Arich Anpin, except that in order for it to be revealed, it divides into the four Partzufim that clothe Arich. These are called “the Name of Atik” (Idra Zuta, ibid.). For this reason Arich Anpin extends the length of the entire world, while all the other four Partzufim clothe Arich – Abba and Imma to the navel, Zeir Anpin and the Nukva from the navel and below. Accordingly, all of them are only garments on Arich Anpin. Each garment clothes only one part, but together all of them clothe Arich Anpin completely.