Valmiki Ramayana Aranya Kanda Sarga 56 Shloka 29
Original Shlokaस ताः प्रोवाच राजा तु रावणो घोरदर्शनः। प्रचाल्य चरणोत्कर्षैर्दारयन्निव मेदिनीम्।।3.56.29।।
1 source checked for this shloka
घोरदर्शनः of terrific form, राजा king, सः रावणः that Ravana, चरणोत्कर्षैः stamping his feet, मेदिनीम् on the ground, प्रचाल्य after shaking, दारयन्निव as if tearing the ground, ताः to them, प्रोवाच said.
Stamping his feet and shaking the ground as if tearing the earth, Ravana said to those fiercelooking demonesses: