Ramayana
कत्थसेकिंवृथारक्षो बहून्यसदृशानिते । न रणेशक्यतेजेतुंविनायुद्धेनवाग्भलात् ॥ ६-७९-१८
"Rakshasa! Why so much of wasteful talk about What you can't accomplish? Victory is not possible on the battlefield with your force of speech." ॥ 6-79-18॥
english translation
katthasekiMvRthArakSo bahUnyasadRzAnite । na raNezakyatejetuMvinAyuddhenavAgbhalAt ॥ 6-79-18
hk transliteration by Sanscript