No Vision, No Memory, No Thought, No Movement
The meditation practice and night vigils of the Sufis differ according to the place, time, and particular orientation of the spiritual master. Some spiritual masters are far more ecstatic than others. Some are more serious or sober in their outer manner. However, all of them have something in common, just as master chefs in a kitchen have the love of food and knowledge of cooking in common. The spiritual masters share a state of inner silence and contentment. According to them, since the creation began from silence, anyone who wishes to start living must return to that point or origin - utter silence - an inner silence in which there is no vision, no memory, no thought, no movement.
By Shaykh Fadhlalla Haeri from the book "The Thoughtful Guide to Sufism"