Part 15 · Chapter 94

And it follows that just as ZA returned to his first measure, so too the Nukva, after she had grown back to back into a complete Partzuf, as mentioned, returned to her first measure, to be in the aspect of a small point, by means of the casting of the deep sleep, as mentioned. Therefore she is now called a rib, and not a Partzuf; as the verse says, "And He took one of his ribs."