Valmiki Ramayana Sundara Kanda Sarga 63 Shloka 15
Original Shlokaनैषामकृत्यानामीदृशस्स्यादुपक्रमः।।5.63.15।। आगतैश्च प्रमथितं यथा मधुवनं हि तैः। धर्षितं च वनं कृत्स्नमुपयुक्तं च वानरैः।।5.63.16।।
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आगतैः having come, तैः those, वानरैः vanaras, मधुवनम् Madhuvanam, यथा that way, प्रमथितम् entered, कृत्स्नम् whole, वनम् garden, धर्षितम् broken, उपयुक्तं च right, एषाम् they that way, अकृतकृत्यानाम् if they had not accomplished their purpose, ईदृशः this way, उपक्रमः indulged, न स्यात् not done.
"Those vanaras having entered Madhuvanam and broken the trees are quite right. Had they not accomplished their purpose they would not have indulged themselves that way.