Valmiki Ramayana Sundara Kanda Sarga 26 Shloka 32
Original Shlokaसान्थकारा हतद्योता हतराक्षसपुङ्गवा। भविष्यति पुरी लङ्का निर्दग्धा रामसायकैः।।5.26.32।।
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लङ्कापुरी the state of Lanka, रामसायकैः with Rama's arrows, निर्दग्धा burnt totally, सान्धकारा filled with darkness, हतद्योता lost splendour, हतराक्षसपुङ्गवा with powerful demons killed, भविष्यति will be
"Totally burnt by Rama's arrows, this Lanka will be filled with darkness, and its splendour lost and preeminent demons destroyed.