Valmiki Ramayana 3.35.9
दशग्रीवो विम्शति भुजो दर्शनीय परिच्छदः ।त्रिदश अरिः मुनीन्द्र घ्नो दश शीर्ष इव अद्रि राट्॥
daśagrīvo vimśati bhujo darśanīya paricchadaḥ |tridaśa ariḥ munīndra ghno daśa śīrṣa iva adri rāṭ ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book