Ramayana
बिभीषणमथोवाच राक्षसेन्द्रं महायशाः । यावत्प्रजा धरिष्यन्ति तावत्त्वं वै बिभीषण । राक्षसेन्द्र महावीर्य लङ्कास्थस्त्वं धरिष्यसि ॥ 7-108-27 ॥
Then the greatly renowned one spoke to Vibhishana, the lord of the rakshasas: "As long as living beings shall endure, so long shall you endure, O Vibhishana; O lord of the rakshasas of mighty valor, you shall remain dwelling in Lanka."
english translation