Valmiki Ramayana Yuddha Kanda Sarga 41 Shloka 56
Original Shlokaतेनशब्देनमहतासप्राकारासतोरणा ।।6.41.56।। लङ्काप्रचलितासर्वासशैलवनकानना ।
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महता great, तेनशब्देन by that sound, सप्राकारा that boundary, सतोरणा the archways, सशैलवनकानना mountains forests, सर्वा all, लङ्का Lanka, प्रचलिता shook violently.
By the great sound the boundary, the archways and the mountains and forests shook violently.