Part 10 · Chapter 134

And the truth is that the woman does not become pregnant from a first union until that spirit left in her from the first union makes her into a vessel, and afterward she becomes pregnant from a second union. However here, since the Nukva of Arich is not a phase separate from him, but rather she is included in him as mentioned, therefore he did not need to make her into a vessel, and she became pregnant from the first union. And nevertheless he needed to have his right half in the Yesod of Aba in the secret of Mayin Duchrin, and his left half in the Yesod of Ima in the secret of Mayin Nukvin.