Ramayana
भाषाज्ञानिङ्गितज्ञांश्च नैगमांश्चाप्यशेषतः । हेतूपचारकुशलान् वचने चापि हैतुकान् ॥ 7-94-8 ॥
He summoned those who knew languages and those who could read gestures, and the men learned in scripture without exception, those skilled in the proper application of arguments, and those expert in reasoned discourse in speech.
english translation