Valmiki Ramayana Bala Kanda Sarga 35 Shloka 13
Original Shlokaचोदितो रामवाक्येन विश्वामित्रो महामुनि:। वृद्धिं जन्म च गङ्गाया वक्तुमेवोपचक्रमे।।1.35.13।।
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रामवाक्येन by Rama's words, चोदित: prompted, विश्वामित्र: महामुनि: maharshi Visvamitra, गङ्गाया: river Ganga's, जन्म birth, वृद्धिं च progress, वक्तुम् to tell, उपचक्रमे commenced.
Prompted by Rama's words, maharshi Viswamitra started narrating the account of the birth and progress of river Ganga.