Valmiki Ramayana Yuddha Kanda Sarga 121 Shloka 20
Original Shlokaविशुद्धात्रिषुलोकेषुमैथिलीजनकात्मजा । न विहातुंमयाशक्याकीर्तिरात्ववतायथा ।।6.121.20।।
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जनकात्मजा Janaka's daughter, मैथिली Mythili, त्रिषुलोकेषु in the three worlds, विशुध्धा unsullied, आत्मवता from self, कीर्तिःयथा like fame, मया by me, विहातुम् to renounce, न शक्या not feasible
"Mythili is unsullied in the three worlds. Renouncing her is not feasible just as fame and as she is like my own self."