Valmiki Ramayana Yuddha Kanda Sarga 80 Shloka 4
Original Shlokaत्वमप्रतिमकर्माणमिन्द्रंजयसिसंयुगे । किंपुनर्मानुषौदृष्टवा न वधिष्यसिसंयुगे ।।6.80.4।।
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त्वम् you, संयुगे in battle, अप्रतिमकर्माणम् by incomparable deeds, इन्द्रम् Indra, जयसि won, संयुगे in combat, मानुषौ men, दृष्टवा seeing, किंपुनः why again, न वधिष्यसिnot kill them
"You have won the battle with Indra of incomparable deeds. Why not kill men, onseeing them in combat?"