Valmiki Ramayana Ayodhya Kanda Sarga 5 Shloka 9
Original Shlokaप्रसन्नस्ते पिता राम यौवराज्यमवाप्स्यसि। उपवासं भवानद्य करोतु सह सीतया।।2.5.9।।
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राम O Rama, ते with you, पिता (your) father, प्रसन्नः welldisposed, यौवराज्यम् as heirapparent, अवाप्स्यसि will obtain, भवान् you, अद्य today, सह सीतया with Sita, उपवासं करोतु undertake fast.
O Rama, welldisposed towards you, your father will declare you heirapparent. Do undertake fast today, along with Sita.