קהלת יב:ז קבלה: זוהר

Ruach gives existence to the Nefesh in this world. It is drawn by the arousal of the Nukvah toward the male, when they are in a state of united passion. The female is aroused toward the male because of her passion to receive from him the Ruach, just like a woman in this world who is inseminated by the power of her passion to (receive from) the man. And this is the secret of the words, "and the spirit (Ruach) shall return to the Elohim who gave it" (Kohelet 12:7).

Rabbi Yitzchak opened with the verse, "And the dust returns to the earth as it was, and the spirit returns to Elohim who gave it" (Kohelet 12:7). Come and behold, When the Holy One, blessed be He, created Adam, He took the dust from the place of the Temple and built his body from the four directions of the world, each of which gave him strength. Later, He poured the spirit of life upon him, as it is written, "And breathed into his nostrils the breath of life" (Gen. 2:7). Then he stood up and knew that he comprised both high and low; he cleaved to Hashem and knew the supernal wisdom.