Devibhagavatapurana 3.27.51

3.27.51

tena prāptā'tha vaidehī kṛtvā setuṃ mahārṇave |
hatvā mandodarīnāthaṃ kumbhakarṇaṃ mahābalam ||

As a fruit of this worship he was able to bridge the great ocean and kill the giant Kumbha Karna, Meghanâda, the Râvana’s son, and Râvana, the king of Lanka; and subsequently he was able to recover his Sîtâ. He installed Vibhîsana on the throne of Lanka (Ceylon) and at last returned to Ayodhyâ and reigned there without any enemies.