How many of a saint of God who is of great standing and has a long lifespan have died without having achieved the prostration of the heart, without knowing that the heart has a fundamental prostration with its verification of statehood and its foot being firmly established in it. If the prostration of the heart occurs, it never raises its head from its prostration, for it is its stability on that one foot from which the feet branch. Many saints see that the heart fluctuates from one state to another, and that is why it is called the heart and the owner of this position, even if its conditions fluctuate, then from one eye that is constant upon it, it is expressed by the prostration of the heart. This is why when Sahl bin Abdullah Abadan came to the Sheikh, he said to him: Should the heart prostrate? The Sheikh said to eternity, so it is easy to serve him .