The breadth of the breath is in its volume. This comes by the facility one has of breathing through wide nostrils and open lungs. The secret of the power of voice is also to be found in this. The voice of a commander of an army which carries through the army and impresses the soldiers, thus encouraging them to fight, has breath as its secret behind it. Ali, by his invocation of the sacred word which he sometimes used to cry aloud on the battlefield, used to cause the enemies to tremble.