Valmiki Ramayana Yuddha Kanda Sarga 42 Shloka 33
Original Shlokaएतच्छ्रुत्वाततोवाक्यंरावणस्यमुखोद्गतम् । सहसाभीमनिर्घोषमुद्घुष्टंरजनीचरैः ।।6.42.33।।
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रावणस्य from Ravana's, मुखोद्गतम् command issued from his mouth, एतच्छ्रुत्वा as soon as it was heard, ततो that, वाक्यं words. सहसा instantly, भीमनिर्घोषमुद्घुष्टं terrific roar, रजनीचरैः night rangers.
Hearing the command issued from Ravana's mouth, immediately a terrific roar was raised by the night rangers.