זוהר שמות — דף רנה ע”א

Just as the dross separates from the good, those who fulfilled what was necessary were already foreseen in divine thought. Joy from the masculine side and joy from the feminine side unite as one. The seventh palace contains all the palaces — it is the supreme mystery, the treasury of light that flows for the mystery of unions. From there downward, abundance spreads through all the worlds.