Valmiki Ramayana Yuddha Kanda Sarga 4 Shloka 97
Original Shlokaते सह्यं समतिक्रम्य मलयं च महागिरिम् । आसेदुरानुपूर्व्येण समुद्रं भमनिस्स्वनम् ।।6.4.97।।
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ते they, सह्याम् Sahya mountain, महागिरिम् great mountain, मलयं च and Malaya mountain, समतिक्रम्य likewise, आनुपूर्व्येण crossing one after the other, भीमनिस्वनम् of frightening size, समुद्रम् ocean, आसेदुः reached
The vanaras crossing over the great Sahya and Malaya mountains one after another reached near the frightening ocean.