Valmiki Ramayana Yuddha Kanda Sarga 110 Shloka 9
Original Shlokaसक्रोधवशमापन्नोहयानामपसर्पणे ।।6.110.9।। मुमोचनिशितान्बाणान्राघवायदशाननः ।
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हयानाम् the horses, अपसर्पणे retreating, क्रोधवशम् prey to anger, आपन्नःafflicted, दशाननःtenheaded one, राघवाय on Raghava, निशितान् pointed, बाणान् arrows, मुमोच released
Fallen prey to anger for retreating the horses, the ten headed Ravana released pointed arrows on Raghava.