Valmiki Ramayana Sundara Kanda Sarga 39 Shloka 25
Original Shlokaकथं नु खलु दुष्पारं तरिष्यन्ति महोदधिम्। तानि हर्यृक्षसैन्यानि तौ वा नरवरात्मजौ।।5.39.25।।
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तानि those, हर्यृक्षसैन्यानि army of vanaras and bears, तौ they both, Rama and Lakshmana, नरवरात्मजौ princes, दुष्पारम् difficult to cross, महोदधिम् ocean, कथं नु how indeed, तरिष्यन्ति they can cross.
"How can the army of vanaras and bears, for that matter, princes Rama and Lakshmana negotiate the ocean, which is difficult to cross?