Thus, new vessels were made in the holy partzufim, instead of the fourth level serving in that capacity, after the first constriction (tzimtzum). They were fashioned through the rebuffing of the returning light by means of the fusion through collision of the supernal light against the partition. It is necessary to understand this returning light, how it became a receiving vessel. Initially it was merely light that was rebuffed from being received, and now it subsequently serves a function that is the opposite of its own type.18The rebuffed light can be viewed as the supernal light that was blocked from entering the fourth level. Since the supernal light is wholly giving, the author of the Sulam questions how it can now serve as a receiving vessel.