Valmiki Ramayana Yuddha Kanda Sarga 16 Shloka 17
Original Shlokaइत्युक्तःपरुषंवाक्यंन्यायवादीविभीषणः । उत्पपातगदापाणिश्चतुर्भिस्सहराक्षसैः ।।6.6.17।।
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इति: this, परुषम् harsh, वाक्यम् words, उक्तः having spoken, न्यायवादी: one who is just in argument, विभीषणः Vibheeshana, गदापाणिः wielding the mace, चतुर्भिः with four, राक्षसैःसह: accompanied by Rakshasas, उत्पपात: rose up.
Vibheeshana who was just in his argument rose up, wielding mace in hand accompanied by the four Rakshasas, when Ravana had spoken such harsh words to him.