"Do not abandon the invocation because you do not feel the Presence of God therein. For your forgetfulness of the invocation of Him is worse than your forgetfulness in the invocation of Him. Perhaps He will take you from as invocation with forgetfulness to one with vigilance, and from one with vigilance to one with the Presence of God, and from one with the Presence of God to one wherein everything but the Invoked is absent. "And that is not difficult for God" (Qur'an 14:20)"
