Valmiki Ramayana Yuddha Kanda Sarga 11 Shloka 28

ततः thereafter, महात्मा: great, यशस्वी: illustrious, विभीषणः Vibheeshana, विपुलम् broad, सुयुग्यं: yoked with good horses, हेमविचित्रिताङ्गम् decked with gold, शुभम् auspicious, वरम् choicest, रथम् chariot, आस्थाय: having ascended, अग्रजस्य: of the elder brother, संसदम् assembly, ययौ: went.

Thereafter illustrious and great Vibheeshana having ascended auspicious and choicest chariot decked with gold and yoked to good horses went to the assembly of his elder brother.