Valmiki Ramayana Yuddha Kanda Sarga 34 Shloka 7
Original Shlokaमत्प्रियंयदिकर्तव्यंयदिबुद्धि: स्थिरातव । ज्ञातुमिच्छामितंगत्वाकिंकरोतीतिरावणः ।।6.34.7।।
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मप्रतियम् in my opinion, कर्तव्यंयदि What you should do, तव your, बुद्धिः understood, स्थिरायदि resolved firmly, रावणः Ravana, किंकरोतीति What is he doing, तम् to him, गत्वा you go, ज्ञातुम् find out, इच्छामि I wish.
"In my opinion, your duty for me is to go and find out what Ravana is doing now, if you are firmly resolved."