Ramayana
तमुवाचाशु शत्रुघ्नः क्व मे जीवन्गमिष्यसि । शत्रुर्यदृच्छया दृष्टो न मोक्तव्यः कृतात्मना ॥ 7-68-18 ॥
Shatrughna swiftly said to him: "Where will you go alive from me? An enemy spotted by chance must not be released by a resolute man."
english translation