Valmiki Ramayana Aranya Kanda Sarga 41 Shloka 5
Original Shlokaकेनेदमुपदिष्टं ते क्षुद्रेणाहितवादिना। यस्त्वामिच्छति नश्यन्तं स्वकृतेन निशाचर।।3.41.5।।
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निशाचर O nightwalker (Ravana), यः he who, त्वाम् to you, स्वकृतेन by your own action, नश्यन्तम् being destroyed, इच्छति wishes, क्षुद्रेण by a mean fellow, अहितवादिना one who gives wrong advice, केन by whom, इदम् this, ते to you, उपदिष्टम् advised.
O Ravana by which mean fellow is this advice given against your welfare? Who wants you to be destroyed by your own action.