Valmiki Ramayana Kishkindha Kanda Sarga 6 Shloka 6
Original Shlokaरसातले वा वर्तन्तीं वर्तन्ती वा नभस्थले अहमानीय दास्यामि तव भार्यामरिन्दम।।।4.6.6।।
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अरिन्दम subduer of enemies, रसातले in the underworld, वर्तन्तीम् staying, वा or, नभस्तले in the sky, वर्तन्तीम् staying, वा or, तव भार्याम् your wife, आनीया after restoring, (अहं) दास्यामि (I) will give you
'O subduer of enemies I will restore her to you even if she is kept in the bowels of the earth or in the vaults of heaven.