Parte 9 · Capítulo 28

Therefore this Ibur [conception] lasts seven months, corresponding to the seven lower [Sefirot] of Atik. Yet of the upper half of the Sefira of Hesed of Atik Yomin they have no attainment whatsoever, by any possibility — all the more so from there upward. Therefore these seven months are not complete; and this is the secret of what our sages said: whoever bears at seven, bears at incomplete months — for every Ibur of seven is drawn from here, and they are incomplete for the reason mentioned. And from this internality of the Mochin of ZON [Zeir Anpin and Nukva], too, the souls of the righteous were drawn and made. This is the secret of those great righteous ones who were all born at seven incomplete months, like Moses and Samuel and Peretz and Zerach: for all these souls are drawn from the seven of Atik that are within the seven of the Galgalta [skull] of Arich. Understand this.