Bhishma said-In days of yore, Indra, accompanied by the celestial army, proceeded on his car, and saw the Asura Vritra stationed before him like a mountain.
भीष्म उवाच रथेनेन्द्रः प्रयातो वै सार्धं देवगणैः पुरा। ददर्शाथाग्रतो वृत्रं धिष्ठितं पर्वतोपमम्॥