Ramayana
अशक्नुवन्तस्ते विष्णुं प्रतियोद्धुं भयार्दिताः । त्यक्त्वा लङ्कां गता वस्तुं पातालं सहपत्नयः ॥ 7-8-22 ॥
Unable to withstand Vishnu in combat and tormented by fear, they abandoned Lanka and went, together with their wives, to dwell in Patala (the netherworld).
english translation