Valmiki Ramayana Yuddha Kanda Sarga 110 Shloka 1
Original Shlokaतौतथायुध्यमानौतुसमरेरामरावणौ । ददृशुस्सर्वभूतानिविस्मितेनान्तरात्मना ।।6.110.1।।
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समरे in war, तथा thus, युध्यमनौ fighting, रामरावणौ Rama and Ravana, सर्वभूतानि all beings, विस्मितेन with astonishment, अन्तरात्मना in mind, ददृशुः observed
As Rama and Ravana were thus fighting in war, all beings watched with astonishment in mind. Tumultuous war takes place between Rama and Ravana for seven days and nights both using powerful arrows, maces, and mallets.