Ramayana
विस्मयं ते परं गत्वा शत्रुघ्नमिदमब्रुवन् । साधु पृच्छ नरश्रेष्ठ वाल्मीकिं मुनिपुङ्गवम् ॥ 7-71-21 ॥
Having reached the height of amazement, they said this to Shatrughna: "It would be well, O best of men, to ask Valmiki, that bull among sages."
english translation