ततः thereafter, भीमवेगस्य in terrific speed, धीमतः wise, दशग्रीवस्य Ravana's, कार्मुकात् bow, भास्वराणि of the sun god, महान्ति brilliant, चक्राणि discuses, निष्पेतुः issued forth

Thereafter, brilliant discus of the Sun God, issued forth from wise Ravana's bow at a terrific speed.