Matsya Purana — Kailasa
ततस्तु ह्लादिनी पुण्या प्राचीनाभिमुखी ययौ प्लावयन्त्युपकांश्चैव निषादानपि सर्वशः //
tatastu hlādinī puṇyā prācīnābhimukhī yayau plāvayantyupakāṃścaiva niṣādānapi sarvaśaḥ //
Then the sacred river Hlādinī, bringing delight, flowed eastward, inundating everywhere the Upakā people as well as the Niṣādas, the forest-dwellers.
It portrays dissolution in practical, geographic terms: waters surge eastward and submerge human settlements, indicating the spreading inundation characteristic of pralaya/flood episodes.
Indirectly, it underscores the vulnerability of populations during catastrophic floods—implying the need for foresight, protection of communities, and disaster-readiness that later dharmic guidance for rulers often emphasizes.
No direct Vāstu or ritual procedure is stated; the main takeaway is the sanctity and directional flow of a named river, which can inform how sacred geography is treated in site-selection and tīrtha-oriented traditions.