Matsya Purana — Tārakāsura’s Austerity and Boon; Mobilization for War; Bṛhaspati’s Fourfold P...
निराहारः पञ्चतपाः पत्त्रभुग्वारिभोजनः शतं शतं समानां तु तपांस्येतानि सो ऽकरोत् //
nirāhāraḥ pañcatapāḥ pattrabhugvāribhojanaḥ śataṃ śataṃ samānāṃ tu tapāṃsyetāni so 'karot //
He undertook austerities again and again for hundreds of years—living without food, practicing the five-fire penance, subsisting on leaves, and taking only water as nourishment.
This verse does not describe pralaya directly; it highlights extreme tapas as a means of spiritual attainment, a common Purāṇic motif that often precedes boons, revelations, or major cosmic events in surrounding narrative contexts.
It presents the ideal of self-control and discipline; for kings and householders, the Matsya Purana typically reframes such intensity into moderated vows (vratas), charity, and regulated fasting—showing that restraint and dharma begin with mastery over appetite and comfort.
No Vāstu or temple-construction rule is stated here; the ritual takeaway is the ascetic regimen itself—nirāhāra (fasting), pañcatapa (five-fire penance), leaf-diet, and water-only observance as recognized forms of tapas in Purāṇic ritual culture.