Part 14 · Chapter 6

There is yet another difference, namely, that the souls of the lower ones cannot ascend in the secret of MAN at night, except once he is from the age of thirteen years and one day and upward. But ZA and his Nukva can ascend once they have nine years and one day, because then he is already complete in his entire Partzuf, and nothing is lacking in him except the aspect of power in their Mochin, that they be fit to give birth; therefore they then ascend in the secret of Mayin Nukvin, and illumination and power are added in their Mochin, and they are corrected, and then they can give birth.