Valmiki Ramayana Aranya Kanda Sarga 11 Shloka 34
Original Shlokaमनोरथो महानेष हृदि मे परिवर्तते।।3.11.34।। यद्यहं तं मुनिवरं शुश्रूषेयमपि स्वयम्।
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तम् to that, मुनिवरम् best of sages, स्वयम् myself, अहम् I, शुश्रूषेयमपि I may serve, यदि that, एषः this, महान् great, मनोरथः desire, मे my, हृदि in the heart, परिवर्तते is being entertained.
There is a great desire in my heart to serve in person the best of sages, Agastya.