As you have already heard, the Tzimtzum was the first measurement calculated by the Supreme Will in order to create all His creatures. We have already called this the Place of all the worlds, and as we have also said, this Place is sufficient for the whole of existence. He therefore surely calculated from the very outset what this existence would be, and He made the Place accordingly, sufficient for all of it.
This calculated measurement constitutes the pathway of boundaries and limits which, as already explained, was subsumed within Eyn Sof. Afterwards it came forth in the form of the Residue in this Place. The act of limitation, which made it possible for independent creatures to exist, is called the Place, while the revelation of the realm of limits – existence itself – is the Residue left from the Light of Eyn Sof.