Matsyapurana 14.3

14.3

acchodaṃ nāma ca saraḥ pitṛbhirnirmitaṃ purā
acchodā tu tapaścakre divyaṃ varṣasahasrakam //

Sûta said: The group of Marichinandana Pitṛis, whom the Devas, constantly meditate upon, live in Somapatha regions. Those known as Agnisvâtta pitris (because they performed great sacrifices to fire, *i.e.*, Agni), reside there where these sacrificers dwell, and the river Achchhodâ is their Mânasa daughter. In days of yore, the stream Achchhodâ was brought into existence by Pitṛis. Achchhodâ practised penance for one thousand years.—1-3.