Matsya Purana — Cosmography of Śākadvīpa and Successive Dvīpas: Mountains
षष्ठस्तु पर्वतस्तत्र महिषो मेघसंनिभः स एव तु पुनः प्रोक्तो हरिरित्यभिविश्रुतः //
ṣaṣṭhastu parvatastatra mahiṣo meghasaṃnibhaḥ sa eva tu punaḥ prokto harirityabhiviśrutaḥ //
There, the sixth mountain is called Mahiṣa, dark and cloud-like in appearance; and that very one is again declared to be Hari (Viṣṇu) himself, renowned by that name.
This verse does not describe Pralaya; it belongs to sacred geography, identifying a specific mountain (Mahiṣa) with Hari (Viṣṇu), emphasizing divine presence in the landscape rather than cosmic dissolution.
Indirectly, it supports the Purāṇic ideal of dharmic life through tīrtha-yātrā and reverence for sacred places: rulers and householders are encouraged to honor and protect holy sites and uphold pilgrimage traditions tied to Viṣṇu.
No explicit Vāstu or temple-building rule is stated; the ritual takeaway is the sanctification of a mountain as Hari—typically implying worship, offerings, and pilgrimage observances at that site as a Viṣṇu-associated kṣetra.