Valmiki Ramayana Yuddha Kanda Sarga 65 Shloka 3
Original Shlokaगर्जन्ति न वृथाशूरानिर्जलाइवतोयदाः । पश्यसम्पद्यमानंतुगर्जितंयुधिकर्मणा ।।6.65.3।।
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शूराः warriors, निर्जलाः waterless, तोयदाःइव cloud like, वृथा wasteful, न गर्जन्ति not roar, युधि in war, कर्मणा action, सम्पद्यमानम् having completed, गर्जितम् will roar, पश्य see.
"Warriors will not roar wastefully like waterless clouds. You will see me roaring after having completed the action."