Part 16 · Chapter 87

And when they were so, it is found that Yetzira and Assiya returned to be like ZA and his Nukva, standing in the secret of back to back. And when the female is at the back of the male, she has only the stature of four Sefirot, as above; but when they return face to face, she has the complete stature of ten Sefirot. And so it was now with Assiya and Yetzira: for Assiya was in the four last [Sefirot] of Yetzira, back to back, and when the time of twilight (bein ha-arbayim) came, then all ten Sefirot of Assiya rose upward, and Assiya turned her face opposite the face of Yetzira, face to face, in the manner of ZA and his Nukva, as mentioned.