Srimad-Bhagavatam: Canto 1 - Chapter 1 - Verse 15

Sanskrit:

स कदाचित्सरस्वत्या उपस्पृश्य जलं शुचि: ।विविक्त एक आसीन उदिते रविमण्डले ॥ १५ ॥

ITRANS:

sa kadācit sarasvatyāupaspṛśya jalaṁ śuciḥvivikta eka āsīnaudite ravi-maṇḍale

Translation:

Once upon a time he [Vyāsadeva], as the sun rose, took his morning ablution in the waters of the Sarasvatī and sat alone to concentrate.

Purport:

The river Sarasvatī is flowing in the Badarikāśrama area of the Himālayas. So the place indicated here is Śamyāprāsa in Badarikāśrama, where Śrī Vyāsadeva is residing.