Valmiki Ramayana Yuddha Kanda Sarga 68 Shloka 22
Original Shlokaविभीषणवचोयावत्कुम्भकर्णप्रहस्तयोः । विनाशोऽयंसमुत्पन्नोमांव्रीडयतिदारुणः ।।6.68.22।।
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कुम्भकर्णप्रहस्तयोः both Kumbhakarna and Prahastha, दारुणः dreadful, अयम् this, विनाशः loss, यावत् totally, समुत्पन्नः that which has come up, विभीषणवचः Vibheeshana's words, माम् me, व्रीडयति hurts me.
"Thus, loss of both Kumbhakarna and Prahastha is dreadful. It is because of not following the words of advice of Vibheeshana totally. It hurts me."