To defeat Ravana in battle was (for you) in small matter; but it is a piece of good fortune that Ravana's son, who had confronted you for combat, has been slain (by you) in battle.
संख्ये तस्य न किंचित्तु रावणस्य पराभवः। द्वन्द्वयुद्धमनुप्राप्तो दिष्ट्या ते रावणिर्हतः॥