Valmiki Ramayana Yuddha Kanda Sarga 114 Shloka 77
Original Shlokaहेत्वर्थयुक्तंविधिवच्छ्रेयस्करमदारुणम् । विभीषणेनाभिहितं न कृतंहेतुमत्त्वया ।।6.114.77।।
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त्वया by you, हेत्वर्थयुक्तम् meaningful and reasonable, विधिवत् according to tradition, श्रेयस्करम् beneficial, अदारुणम् agreeable, हेतुमत् with reason, विभीषणेन by Vibheeshana, अभिहितम् very good, न कृतम् not done
"You have not listened to the meaningful, agreeable and reasonable advice given according to tradition by Vibheeshana."