On Rama's enquiry, Vibhishana explains the prowess of Prahasta who entered the battle-field. The demons with their arrows and the monkeys with their stones combat each other. Both the monkeys and demons were killed in the battle. Prahasta the demon and Nila the monkey come face to face to fight. Prahasta hurls a volley of darts over Nila. Nila kills Prahasta's horses by hurling a huge tree and breaks his bow. Finally a huge rock hurled by Nila breaks Prahasta's head into myriad pieces and dies. All the other demons abandon the battle-field and return to Lanka.