Valmiki Ramayana Ayodhya Kanda Sarga 13 Shloka 8
Original Shlokaअपुत्रेण मया पुत्रश्श्रमेण महता महान्। रामो लब्धो महाबाहु स्सकथं त्यज्यते मया।।2.13.8।।
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अपुत्रेण without sons, मया by me, महता with great, श्रमेण with effort, महान् mighty, महाबाहुः mightyarmed, रामः Rama, पुत्रः as son, लब्ध: obtained, सः he, मया by me, कथम् how, त्यज्यते can be abandoned.
When I was issueless, I obtained mighty and valiant Rama with great effort as a son. How can I banish him?