Valmiki Ramayana Yuddha Kanda Sarga 31 Shloka 5
Original Shlokaमन्त्रयित्वासदुर्धर्षःक्षमंयत्समनन्तरम् । विसर्जयित्वासचिवान्प्रविवेशस्वमालयम् ।।6.31.5।।
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दुर्दर्षः unassailable, अनन्तरम् after that, यत् that which, क्षमम् proper, तत् that, मन्त्रयित्वा thinking over, सचिवान् minister, विसर्जयित्वा dispensed away, स्वम् his own, आलयम् residence, प्रविवेश entered.
Thereafter, thinking about what is appropriate to do, unassailable Ravana dispensed his ministers and entered his own residence.