Valmiki Ramayana Bala Kanda Sarga 43 Shloka 33
Original Shlokaयतो भगीरथो राजा ततो गङ्गायशस्विनी।।1.43.33।। जगाम सरितां श्रेष्ठा सर्वपापप्रणाशिनी।
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राजा king, भगीरथ: Bhagiratha, यत: wherever, यशस्विनी renowned, सरितां श्रेष्ठा foremost of rivers, सर्वपापप्रणाशिनी destroyer of all sins, गङ्गा Ganga, तत: in the same direction, जगाम flowed.
Ganga, famous and foremost of rivers, destroyer of all sins, flowed in the direction king Bhagiratha moved.