Ramayana
सङ्ख्ये तस्य न किञ्चित्तु रावणस्य पराभवः । द्वन्द्वयुद्धमनुप्राप्तो दिष्ट्या ते रावणिर्हतः ॥ 7-1-28 ॥
'In battle, Ravana's defeat was no small matter. By good fortune, the son of Ravana (Indrajit), having come to single combat, was slain by you.'
english translation