Valmiki Ramayana 6.91.99

इत्यार्षे श्रीमद्रामायणे वाल्मीकीये आदिकाव्ये श्रीमद्युद्धकाण्डे एकनवतितमः सर्गः॥

ityārṣe śrīmadrāmāyaṇe vālmīkīye ādikāvye śrīmadyuddhakāṇḍe ekanavatitamaḥ sargaḥ ||

Our plain-language meaning of this verse is waiting for scholar review.