Matsya Purana — Division of Bhārata-varṣa
वासिक्याश्चैव ये चान्ये ये चैवान्तरनर्मदाः भारुकच्छाः समाहेयाः सह सारस्वतैस्तथा //
vāsikyāścaiva ye cānye ye caivāntaranarmadāḥ bhārukacchāḥ samāheyāḥ saha sārasvataistathā //
Likewise, the Vāsikyas and other groups, and those dwelling in the inner region of the Narmadā; the Bhārukacchas and the Samāheyas as well—together with the Sārasvatas—are also to be counted among these peoples and regions.
This verse is not about Pralaya; it is part of a geographic-ethnographic catalogue, naming peoples associated with the Narmadā–Sarasvatī regions.
Indirectly, it supports dharmic governance and pilgrimage culture: kings and householders are guided to recognize sacred regions and communities, which informs patronage, protection of tirthas, and orderly travel/pilgrimage.
No explicit Vāstu or temple rule is stated; the ritual significance is implicit—these named regions/communities are typically linked to tirtha networks where bathing, offerings, and ancestral rites are performed.