Valmiki Ramayana Bala Kanda Sarga 17 Shloka 25
Original Shlokaविचालयेयुश्शैलेन्द्रान्भेदयेयुस्स्थिरान्द्रुमान्। क्षोभयेयुश्च वेगेन समुद्रं सरितां पतिम्।।1.17.25।।
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शैलेन्द्रान् mountains, विचालयेयु: could move, स्थिरान् द्रुमान् deeprooted trees, भेदयेयु: could break, वेगेन with speed, सरितां पतिम् the lord of the rivers, समुद्रम् Samudra, क्षोभयेयु: could cause disturbance.
They could shake mountains and uproot deeprooted trees. With their speed they could cause disturbance to Samudra, the lord of the rivers.