Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/26/23

गंगाजलं तदा तत्र स्त्रीरूपमभवत्परम् ।। तस्याश्चैव ऋषिश्रेष्ठः स्तुतिं कृत्वा नतिं व्यधात् ।। २३ ।।

sanskrit

Then the waters of Gaṅgā assumed the form of a lady and stood there. The excellent sage eulogised her and made obeisance.

english translation

gaMgAjalaM tadA tatra strIrUpamabhavatparam || tasyAzcaiva RSizreSThaH stutiM kRtvA natiM vyadhAt || 23 ||

hk transliteration by Sanscript