Question: Birth is a very complex and complicated process and is explained in the 400 pages of the six volumes of the Talmud Eser Sefirot (The Study of the Ten Sefirot) by Baal HaSulam. At what moment does conception take place?
Answer: Conception takes place the moment that the Kli (vessel, desire) is ready for conception. When the female part (the desire to receive) is ready to unite with the male part (the intention for the sake of bestowal), by becoming like it, which means the moment that our desire becomes worthy of bonding with the intention for the sake of the Creator (bestowal), then immediately a union takes place between them and a Partzuf (a spiritual body) appears.
The left side of the Partzuf is the female part, and the right line is the male part, and between them they give birth to the assimilation to the Creator, which is called the third line or soul.
Question: Why does conception have to be carried out at night?
Answer: The entire process takes place for the sake of the attribute of bestowal. Night is darkness and the attribute of bestowal can be revealed and appears only in darkness, in the state where the soul doesn’t want any light and enlightenment, so that its action will really be with the intention for the sake of bestowal. In other words, I don’t want to see the future, I don’t want anything for myself. I only want to act in bestowal. This state is called night.
From the Kabbalah Lesson in Russian 4/24/16