Valmiki Ramayana Yuddha Kanda Sarga 41 Shloka 82
Original Shlokaविभीषणस्यचैश्वर्यंभविष्यतिहतेत्वयि । नचेत्सत्कृत्यवैदेहींप्रणिपत्यप्रदास्यसि ।।6.41.82।।
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प्रणिपत्य bowing down, वैदेहीम् Vaidehi, सत्कृत्य respectfully, नप्रदास्यसिचेत् not return back, त्वयि by you, हते being killed, ऐश्वर्यम् fortune, विभीषणस्य to Vibhishana, भविष्यति will be getting.
"Unless you return back Vaidehi respectfully, bowing down to me you will be killed and Vibheeshana will get the fortune."