Valmiki Ramayana 5.1.10
प्लवङ्गप्रवरैर्दृष्टः प्लवने कृतनिश्चयः ।ववृधे रामवृद्ध्यर्थम् समुद्र इव पर्वसु॥
plavaṅgapravarairdṛṣṭaḥ plavane kṛtaniścayaḥ |vavṛdhe rāmavṛddhyartham samudra iva parvasu ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book