Valmiki Ramayana Aranya Kanda Sarga 47 Shloka 3
Original Shlokaदुहिता जनकस्याहं मैथिलस्य महात्मनः। सीता नाम्नास्मि भद्रं ते रामभार्या द्विजोत्तम।।3.47.3।।
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द्विजोत्तम O best of brahmin, अहम् I am, मैथिलस्य of the king of Maithila, महात्मनः of the great king, जनकस्य Janaka's, दुहिता daughter, नाम्ना by name, सीता अस्मि Sita, रामभार्या wife of Rama, ते to you, भद्रम् be pleased.
O best of brahmins be pleased to know I am Sita by name, daughter of the great Janaka, king of Mithila and wife of Rama.