Valmiki Ramayana Kishkindha Kanda Sarga 43 Shloka 25
Original Shlokaतस्य चन्द्रनिकाशेषु पर्वतेषु गुहासु च। रावणः सह वैदेह्या मार्गितव्यस्ततस्ततः।।4.43.25।।
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तस्य its, चन्द्रनिकाशेषु of the colour of the Moon, पर्वतेषु in mountains, गुहासु च and caves, ततस्ततः here and there, वैदेह्या सह with Vaidehi, रावणः Ravana, मार्गितव्यः you may look for.
'Look for Vaidehi and Ravana all over the caves and mountains of Kilasa of the colour of the moon.