Shiva Purana
इति वश्च समाख्यातो गौतम्याश्च समुद्भवः ॥ माहात्म्यमुत्तमं चैव सर्वपापहरं परम् ॥ ४८ ॥
Thus the origin of Gautamī river has been narrated to you. So also its glory destructive of all sins.
english translation
iti vazca samAkhyAto gautamyAzca samudbhavaH ॥ mAhAtmyamuttamaM caiva sarvapApaharaM param ॥ 48 ॥
hk transliteration by Sanscript