sa kadācit sarasvatyā
upaspṛśya jalaṁ śuciḥ
vivikta eka āsīna
saḥ—he; kadācit—once; sarasvatyāḥ—on the bank of the Sarasvatī; upaspṛśya—after finishing morning ablutions; jalam—water; śuciḥ—being purified; vivikte—concentration; ekaḥ—alone; āsīnaḥ—being thus seated; udite—on the rise; ravi-maṇḍale—of the sun disc.
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.
The River Sarasvatī is flowing in the Badarikāśrama area of the Himalayas. So the place indicated here is Śamyāprāsa in Badarikāśrama, where Śrī Vyāsadeva is residing.
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