Valmiki Ramayana Yuddha Kanda Sarga 75 Shloka 2
Original Shlokaयतोहतःकुम्भकर्णःकुमाराश्चनिषूदिताः । नेदानीमुपनिर्हारंरावणोदातुमर्हति ।।6.75.2।।
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यतः since, कुम्भकर्णः Kumbhakarna, हतः killed, कुमाराश्च son, निषूदिताः destroyed, रावणः Ravana, इदानीम् no longer, उपनिर्हारम् put up defence, दातुम् again, न अर्हति I think.
" As Kumbhakarna is killed and his sons are destroyed, Ravana may not putup defence again. I think."