Canto 1 - Boyhood
Bāla-kāṇḍa
Chapter 43: Gaṅgā Descends to the Earth
Text 1.43.17
सप्तमी चान्वगात्तासां भगीरथमथो नृपम्।
saptamī cānvagāt tāsāṁ bhagīratham atho nṛpam
saptamī ca = the seventh; anvagāt = followed; tāsām = among Gaṅgā’s streams; bhagīratham = Bhagīratha; atho = then; nṛpam = king.
Then, the seventh among Gaṅgā’s streams followed King Bhagīratha.