Valmiki Ramayana Aranya Kanda Sarga 48 Shloka 5
Original Shlokaयद्भयार्तः परित्यज्य स्वमधिष्ठानमृद्धिमत्। कैलासं पर्वतश्रेष्ठमध्यास्ते नरवाहनः।।3.48.5।।
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नरवाहनः Kubera (having a human being as his carrier), यद्भयार्तः due to fear of whom, ऋद्धिमत् prosperous, स्वम् his own, अधिष्ठानम् place of residence, परित्यज्य giving up, पर्वतश्रेष्ठम् mighty mountain, कैलासम् Kailasa, अध्यास्ते residing.
Out of fear for me, Kubera is residing on the mighty mount Kailasa, leaving his own earlier prosperous place of residence.