Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/27/1

ऋषय ऊचुः ।। गंगा च जलरूपेण कुतो जाता वद प्रभो ।। तन्माहात्म्यं विशेषेण कुतो जात वद प्रभो ।। १।।

sanskrit

The sages said:— O holy lord, whence did Gaṅgā originate in the form of water? How could it attain its greatness? Please narrate.

english translation

RSaya UcuH || gaMgA ca jalarUpeNa kuto jAtA vada prabho || tanmAhAtmyaM vizeSeNa kuto jAta vada prabho || 1||

hk transliteration by Sanscript