Valmiki Ramayana Sundara Kanda Sarga 37 Shloka 9
Original Shlokaविभीषणेन च भ्रात्रा मम निर्यातनं प्रति। अनुनीतः प्रयत्नेन न च तत्कुरुते मतिम्।।5.37.9।।
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भ्रात्रा by the brother, विभीषणेन by Vibhisana, मम my, निर्यातनं प्रति for my restoration, प्रयत्नेन made efforts, अनुनीतः he was advised gently, तत् such, मतिम् thought, न कुरुते he has not agreed.
"Vibhisana made efforts to advise Ravana for my restoration. But Ravana has not agreed to that.