Valmiki Ramayana Aranya Kanda Sarga 34 Shloka 3
Original Shlokaआयुधं किञ्च रामस्य निहता येन राक्षसाः। खरश्च निहतस्संख्ये दूषणस्त्रिशिरास्तथा।।3.34.3।।
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येन by what, राक्षसाः demons, खरश्च and Khara, दूषणः Dusana, तथा likewise, त्रिशिराः Thrisira, सङ्ख्ये in war, निहताः killed, रामस्य Rama's, आयुधम् weapon, किम् what.
With what weapons he has killed demons like Khara, Dusana and Trisira ?