Valmiki Ramayana Aranya Kanda Sarga 56 Shloka 12
Original Shlokaगतायुस्त्वं गतश्रीको गतसत्त्व गतेन्द्रियः। लङ्का वैधव्यसंयुक्ता त्वत्कृतेन भविष्यति।।3.56.12।।
1 source checked for this shloka
त्वम् you, गतायुः life is gone, गतश्रीकः deprived of your fortune, गतसत्त्व your strength sapped, गतेन्द्रियः your senses dissipated, त्वत्कृतेन by your action, लङ्का Lanka, वैधव्यसंयुक्ता भविष्यति attain widowhood.
Your life is coming to an end. Your fortunes will wane, your strength will be sapped. Your senses will be dissipated. By your deeds Lanka will attain widowhood.