Valmiki Ramayana Ayodhya Kanda Sarga 56 Shloka 12
Original Shlokaततस्तौ पादचारेण गच्छन्तौ सह सीतया। रम्यमासेदतुश्शैलं चित्रकूटं मनोरमम्।।2.56.12।।
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तत: then, सीतयासह with Sita, पादचारेण walking on foot, गच्छन्तौ going, तौ both (Rama and Lakshmana), रम्यम् beautiful, मनोरमम् delightful, चित्रकूटं शैलम् Chitrakuta mountain, आसेदतुः reached.
Then they both along with Sita walked to that lovely, delightful Chitrakuta mountain.