Valmiki Ramayana Yuddha Kanda Sarga 30 Shloka 34

राक्षसानाम् of the Rakshasas, वरिष्ठश्च jewel, तव your, भ्राता brother, विभीषण Vibheeshana, राघवस्य Raghava's, हिते wellwisher, रत remains, लङ्कापुरीम् city of Lanka, प्रतिगृह्य received.

"Here is your brother Vibheeshana the jewel among Rakshasas, who remains as a wellwisher of Rama and has received the city of Lanka (to whom Rama has offered Lanka)."