Ramayana
कैलासं लङ्घयित्वाथ दशग्रीवः स रावणः । आससाद महातेजा इन्द्रलोकं निशाचरः ॥ 7-27-1 ॥
Then, having crossed over Mount Kailasa, the ten-necked Ravana of mighty splendor, that ranger of the night, arrived at the world of Indra.
english translation