Valmiki Ramayana Yuddha Kanda Sarga 110 Shloka 15
Original Shlokaरावणोऽपिततःक्रुद्धोरथस्थराक्षसेश्वरः ।।6.110.15।। गदामुसलवर्षेणरामंप्रत्यर्दयद्रणे ।
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ततः then, क्रुद्धः enraged, राक्षसेश्वरः Rakshasa king, रावणोऽपि Ravana also, रणे in the battle, रामम् Rama, गदामुसलवर्षेण with mace and mallets, प्रत्यर्थयत् in return
Enraged Ravana, the king of Rakshasas, also in return, retaliated with maces and mallets.