According to the way the chain of development is arranged, Yesod of Atik ends in the chest (Tiferet) of Arich Anpin… Each Sefirah has a particular number of sections or “joints” (פרקים, perakim), all with their own measure. In the case of Yesod, the sections are Yesod and Ateret HaYesod – the Corona.
…and it is from there that its Kindnesses (חסדים, chassadim) and Strengths (גבורות, gevurot) go forth and are revealed. For in all the Partzufim, Daat spreads from the head into the body of the Partzuf and is wholly included in its Yesod and shines outwards. For Daat is the essence of the governmental order and this is how it must spread – going out of the vessel and openly spreading. This will be discussed later in its appropriate place (see Opening 124).