And when this will is revealed in the forehead, the will of wills is present throughout the realms; meaning that this full illumination reaches all the realms. And all the prayers from below are accepted; the face of Zeir Anpin is shining, everything is in a state of mercy, and all judgments are hiding and subdued.
The time of the Mincha prayer during weekdays is a time when all Judgments awaken, because then Chochmah of the left column is revealed. On Shabbat the forehead of Arich Anpin is revealed as a wish for the illumination of Chassadim, all Judgments are subdued, and mercy prevails throughout the realms. Hence there is no Judgment on Shabbat, neither above nor below. Even hellfire abates, and the wicked have rest. Therefore, an additional soul of joy is added on Shabbat.