The Great Epic of the Bhārata dynasty 12.202.13

12.202.13

nāvabhotsyanti saṃmūḍhā viṣṇumavyaktadarśanam |
varāharūpiṇaṃ devamadhṛṣyamamarairapi || 13 ||

Endued with boons, and possessed of might, and swelling with pride, those senseless wretches do not know that Vishnu of invisible form, that God incapable of being vanquished by the very deities all acting together, hath assumed the form of a boar. That Supreme Deity, rushing to the spot whither those wretches among Danavas, of terrible aspect, are dwelling in thousands below the earth, will slay them all.' Hearing these words of the Grandsire, foremost ones among the deities felt great joy. Sometime after, Vishnu those of mighty energy, encased in the form of a Boar, penetrating into the nether regions, rushed against those offspring of Diti. Beholding that extraordinary creature, all the Daityas, uniting together and stupefied by Time, quickly proceeded against it for exerting their strength, and stood surrounding it. Soon after, they all rushed against that Boar and seized it simultaneously. Filled with rage they endeavoured to drag the animal from every side. Those foremost of Danavas, of huge bodies, possessed of mighty energy, swelling with strength, succeeded not, however, O monarch, in doing anything to that Boar. At this they wondered much and then became filled with fear. Numbering in thousands, they regarded that their last hour had come. Then that Supreme God of all the gods, having yoga for his soul and yoga for his companion, became rapt in yoga, O chief of the Bharatas, and began to utter tremendous roars, agitating those Daityas and Danavas.