Mbh 5.10.2

“Salya continued, ‘Indra having thus spoken, the gods with that host of Rishis repaired to the mighty god Vishnu to place themselves under the protection of that protector of all. And afflicted with the dread of Vritra, they said unto the Supreme Lord of the deities, “Thou hadst in former times covered the three worlds with three steps. Thou hadst procured the ambrosial food, O Vishnu, and destroyed the Asuras in battle. Thou didst bind the great Asura Vali and hadst raised Indra to the throne of heaven. Thou art the lord of the gods, and this entire universe is pervaded by thee. Thou art the God, the mighty Deity, saluted by all persons. Be thou the refuge of all the celestials together with Indra, O best of gods. The whole universe, O slayer of Asuras, hath been pervaded by Vritra.” And Vishnu said, “I am no doubt bound to do what is for your good. I shall, therefore, tell you of a contrivance whereby he may be annihilated. Do ye with the Rishis and the Gandharvas repair to the place where Vritra that bearer of a universal form is and adopt towards him a conciliatory policy. You will thus succeed in overthrowing him. By virtue of my power, victory, ye gods, will be won by Indra, for, remaining invisible, I shall enter into his thunderbolt, that best of weapons. O foremost of gods, depart ye with the Rishis and the Gandharvas. Let there be no delay in effecting a peace between Indra and Vritra.”’