On account of this beating of the surrounding light on the opacity of the partition, the partition of the body was purified, and its form was equated to the fusing partition that is in the head of the partzuf.151This process can be thought of as follows: when the surrounding light beats against the opacity in the partition, it incrementally renders it increasingly intangible, “purifying” it of opacity.
When this is complete, the partition is now identical to the partition in the bottom of the head (the mouth), and that leads to an equating of form and merging of the two partitions. This equating of form between the partition of the body and that of the head means that the partition of the body ascended and was incorporated in the partition in the mouth of the head. The lower partition joined in the fusion that is taking place in the head, since the equating of form is regarded as a unification.152Since the two partitions are now unified through the equating of form, the lower partition can participate in the fusion through collision transpiring in the partition of the head.
Therefore, through the lower partition’s incorporation in the fusion through collision of the head, all aspects of the opacity of the partition were renewed, except for the last aspect.153The aspect that was not renewed in this example context is the level of opacity of the fourth level, the level of Keter. Therefore, the returning light of this partition (now a partition with only opacity of up to the third level) will only reach a height capable of enclothing Ḥokhma.
This is because the less the opacity in a given partition, the less height the rebounding returning light can reach and enclothe. Then a fusion through collision from the supernal light in the head transpired upon the lower partition, upon the amount of opacity that remained in the lower partition, which is the opacity of the third level, and the height of the partzuf of Ḥokhma emerged from upon the lower partition.