Valmiki Ramayana Aranya Kanda Sarga 37 Shloka 20
Original Shlokaन सा धर्षयितुं शक्या मैथिल्योजस्विनः प्रिया। दीप्तस्येव हुताशस्य शिखा सीता सुमध्यमा।।3.37.20।।
1 source checked for this shloka
मैथिली Maithili, ओजस्विनः of the mighty, प्रिया darling, सुमध्यमा slender waist, सा सीता that Sita, दीप्तस्य of burning, हुताशस्य fire's, शिखा इव like a leaping flame, धर्षयितुम् to touch her, न शक्या not possible.
Sita is the darling of mighty Rama. With her slender waist, she is like the leaping flames of blazing fire and it is not possible for you to touch her.