Valmiki Ramayana Sundara Kanda Sarga 6 Shloka 3
Original Shlokaरक्षितं राक्षसैर्घोरैः सिंहैरिव महद्वनम्। समीक्षमाणो भवनं चकाशे कपिकुञ्जरः।।5.6.3।।
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सिंहैः by lions, महावनमिव like a thick forest, भीमैः by fearful, राक्षसैः by demons, रक्षितम् protected, भवनम् mansion, समीक्षमाणः observing, कपिकुञ्जर: elephant among vanaras, चकाशे looked bright
The elephant among vanaras (Hanuman), scanned the mansion defended by dreadful demons like a forest protected by lions.