And overtaken by Vritra, he was filled with great illusion. And, O venerable sir, the most powerful of Bharata's race, we have heard that Vasishtha comforted Indra and that the God of a Hundred Sacrifices killed Vritra in his body by means of his invisible thunderbolt, and know, O prince, that this religious mystery was recited by Shakra to the great sages, and they in turn told it to me.