Mbh 7.93.5b

And the gods said, ‘O best of gods, O foremost of celestials, be thou the refuge of the gods now crushed by Vritra. Indeed, rescue us from this great fear.’ Then Brahman, addressing Vishnu staying beside him as also those best of celestials headed by Sakra, said unto them that were all cheerless, these words fraught with truth: ‘Indeed, the gods with Indra at their head, and the Brahmanas also, should ever be protected by me. The energy of Tvashtri from which Vritra hath been created is invincible. Having in days of yore performed ascetic penances for a million of years, Tvashtri, then, ye gods, created Vritra, obtaining permission from Maheswara. That mighty foe of yours hath succeeded in smiting you through the grace of that god of gods. Without going to the place where Sankara stayeth, ye cannot see the divine Hara. Having seen that god, ye will be able to vanquish Vritra. Therefore, go ye without delay to the mountains of Mandara. There stayeth that origin of ascetic penances, that destroyer of Daksha’s sacrifice, that wielder of Pinaka, that lord of all creatures, that slayer of the Asura called Bhaganetra.’ Thus addressed by Brahman, the gods proceeding to Mandara with Brahman in their company, beheld there that heap of energy, that Supreme god endued with the splendour of a million suns. Seeing the gods Maheswara welcomed them and enquired what he was to do for them. ‘The sight of any person can never be fruitless. Let the fruition of your desires proceed from this.’ Thus addressed by him, the dwellers of heaven replied, ‘We have been deprived of our energy by Vritra. Be thou the refuge of the dwellers of heaven. Behold, O lord, our bodies beaten and bruised by his strokes. We seek thy protection. Be thou our refuge, O Maheswara!’