Valmiki Ramayana Yuddha Kanda Sarga 2 Shloka 23
Original Shlokaइमेहिहरयश्शूरास्समरेकामरूपिणः । तानरीन्विधमिष्यन्तिशिलापादपवृष्टिभिः ।।6.2.23।।
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समरे: in combat, शूराः heroes, कामरूपिणः those who can take any form at their will, इमेहरयः these vanaras, शिलापादपवृष्टिभिः rain boulders and trees, तान्: those, अरीन्: enemies, विधमिष्यन्तिहि: would cut them to size
"Being heroic in combat, these vanaras can take any form at their will.They would rain boulders and trees on enemies and cut them to size."