Canto 1 - Boyhood
Bāla-kāṇḍa
Chapter 43: Gaṅgā Descends to the Earth
Text 1.43.14
तस्यां विसृज्यमानायां सप्त स्रोतांसि जज्ञिरे।
tasyāṁ visṛjyamānāyāṁ sapta srotāṁsi jajñire
tasyām visṛjyamānāyām = when Gaṅgā was released on to Bindu-saras; sapta = seven; srotāṁsi = streams; jajñire = were formed.
When Gaṅgā was released on to Bindu-saras, seven streams were formed.