Part 2: The truth is... Even without taking into account that, as it goes on to say, it is the legs of Arich Anpin that sustain the vessels, we could still understand this folding of the legs as an arousal of returning light that reached these vessels. Nevertheless, the actual truth is...that the vessels were dependent on these legs. For you have already heard that even when they were in their fallen state down below, a certain radiation (הארה, he’arah) still reached them, and that is what sustained them.
The radiation came to them from there (i.e. from the legs of Arich Anpin), for that is the level on which they were dependent, as explained further in Part 3. Accordingly, during the time when they required a radiation (when they were down below) it came to them from there. And likewise, when they needed to ascend, the power came from there. Accordingly, the proposition continues: