Valmiki Ramayana Aranya Kanda Sarga 31 Shloka 29
Original Shlokaभार्या तस्योत्तमा लोके सीता नाम सुमध्यमा। श्यामा समविभक्ताङ्गी स्त्रीरत्नं रत्नभूषिता।।3.31.29।।
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लोके in the world, उत्तमा foremost, श्यामा beautiful woman, समविभक्ताङ्गी woman of wellformed limbs, स्त्रीरत्नं jewel among women, रत्नभूषिता adorned with gems, सीता नाम Sita by name, सुमध्यमा of slender waist, तस्य his, भार्या wife.
Rama has a wife in this world, by name, Sita, who is beautiful, has a slender waist and a wellformed body. Adorned with gems, she is a jewel among women,