Shiva Purana

siva.sh/siva-purana/uma-samhita/17/32

गिरीनतीत्य सकलांश्चतुर्द्दिक्षु महांबुधिम् ।। सा ययौ प्रयता सूता गंगा त्रिपथगामिनी ।। ३२ ।।

sanskrit

Thus the holy river Gaṅgā flowing along three paths, flows into the great ocean in the four quarters after crossing all the mountains.

english translation

girInatItya sakalAMzcaturddikSu mahAMbudhim || sA yayau prayatA sUtA gaMgA tripathagAminI || 32 ||

hk transliteration by Sanscript