Mbh 1.212.2a

‘Narada continued, ‘As soon as those festivities came to an end, the brothers Sunda and Upasunda, desirous of the Sovereignty of the three worlds, took counsel and commanded their forces to be arranged. Obtaining the assent of their friends and relatives, of the elders of the Daitya race and of their ministers of state, and performing the preliminary rites of departure, they set out in the night when the constellation Magha was in the ascendant. The brothers set out with a large Daitya force clad in mail and armed with maces and axes and lances and clubs. The Daitya heroes set out on their expedition with joyous hearts, the charanas (bards) chanting auspicious panegyrics indicative of their future triumphs. Furious in war, the Daitya brothers, capable of going everywhere at will, ascended the skies and went to the region of the celestials. The celestials knowing they were coming and acquainted also with the boons granted unto them by the Supreme Deity left heaven and sought refuge in the region of Brahman. Endued with fierce prowess, the Daitya heroes soon subjugated the region of Indra, and vanquishing the diverse tribes of Yakshas and Rakshasas and every creature ranging the skies, came away. Those mighty car-warriors next subjugated the Nagas of the nether region, and then the inmates of the ocean and then all the tribes of the Mlechchhas. Desirous next of subjugating the whole earth, those heroes of irresistible sway, summoning their soldiers, issued these cruel commands, ‘Brahmanas and royal sages (on earth) with their libations and other food offered at grand sacrifices, increase the energy and strength of the gods, as also their prosperity. Engaged in such acts, they are the enemies of the Asuras. All of us, therefore, mustering together should completely slaughter them off the face of the earth!’ Ordering their soldiers thus on the eastern shore of the great ocean, and entertaining such a cruel resolution, the Asura brothers set out in all directions.