Mahabharata Vana Parva Chapter 285:2

Mahabharata Vana Parva (Draupadi-harana Parva)

Mahabharata Vana Parva Chapter 285:2 At this, that Rakshasa assumed a form enormously huge and furnished with numerous heads and legs and arms. Then the son of Sumitra rived, with a Brahma weapon, that warrior looking like an assemblage of hill. And rent by means of that celestial weapon, that Rakshasa fell on the field of battle like a huge tree with spreading branches suddenly consumed by heaven's thunderbolt. And beholding Kumbhakarna endued with great activity and resembling the Asura Vritra himself, deprived of life and prostrated on the field of battle, the Rakshasa warriors fled in fear. And beholding the Rakshasa warriors running away from the field of battle, the younger brother of Dushana, rallying them, rushed in great wrath upon the son of Sumitra. Sumitra's son, however, with a loud roar, received with his winged shafts both those wrathful warriors, Vajravega and Promathin, rushing towards him. The battle then, O son of Pritha, that took place between those two younger brothers of Dushana on the one hand and the intelligent Lakshmana on the other, was exceedingly furious and made the bristles of the spectators stand on end. And Lakshmana overwhelmed the two Rakshasas with a perfect shower of arrows. And those two Rakshasa heroes, on the other hand, both of them excited with fury, covered Lakshmana with an arrowy hail. And that terrible encounter between Vajravega and Promathin and the mighty-armed Lakshmana lasted for a short while. And Hanumana, the son of Pavana, taking up a mountain peak, rushed towards one of the brothers, and with that weapon took the life of the Rakshasa Vajravega. And that mighty monkey, Nala, also, with a large mass of rock, crushed Promathin, that other younger brother of Dushana. The deadly struggle, however, between the soldiers of Rama and Ravana, rushing against one another, instead of coming to an end even after this, raged on as before. And hundreds of Rakshasas were slain by the denizens of the forest, while many of the latter were slain by the former. The loss, however, in killed, of the Rakshasas was far greater than that of the monkeys.