Then they said to the breath in the mouth: 'Do thou sing for us.' 'Yes,' said the breath, and sang. The Asuras knew: 'Verily, through this singer they will overcome us.' They therefore rushed at him and pierced him with evil. Now as a ball of earth will be scattered when hitting a stone, thus they perished, scattered in all directions. Hence the Devas rose, the Asuras fell. He who knows this, rises by his self, and the enemy who hates him falls.

In plain words: Finally the gods asked the main breath, the life-breath in the mouth, to sing. When the demons attacked it, they shattered like a clump of earth thrown against a rock. So the gods won and the demons fell. Whoever knows this rises, and their enemies fall.