Valmiki Ramayana Aranya Kanda Sarga 47 Shloka 4
Original Shlokaउषित्वा द्वादश समा इक्ष्वाकुणां निवेशने। भुञ्जाना मानुषान्भोगान्सर्वकामसमृद्धिनी।।3.47.4।।
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द्वादश twelve, समाः years, इक्ष्वाकूणाम् of the Ikshvaku family, निवेशने in the house, उषित्वा lived, मानुषान् of mortals, भोगान् pleasures, भुञ्जाना enjoying, सर्वकामसमृद्धिनी all my desires fulfilled.
I lived in the house of the Ikshvakus for twelve years and enjoyed all kinds of pleasures meant for mortals.