The nature of Daat is to extend through the body… This should be clear in the light of what has already been said about Daat. Initially Daat must spread in its own center column and its own vessel – Yesod of Imma – in just the same way as Chochmah and Binah spread in their own vessels. From there Daat must later spread along its own unique path, whereby it emerges from the vessel of Yesod of Imma and extends uncovered and revealed.
Accordingly the vessel of Yesod of Imma from which Daat is revealed consists of only one and a half joints, because its purpose is to reveal the lights. Initially they have to be within it, included there in the top joint of Yesod, which is clothed in the head of Zeir Anpin. It is in the second joint that the revelation takes place, this being one of the exit vessels discussed earlier in connection with the sensory organs (see Openings 32 & 34).