Matsya Purana — Yayāti’s Forest-Renunciation
ततस्तु वायुभक्षो ऽभूत् संवत्सरमतन्द्रितः पञ्चाग्निमध्ये च तपस् तेपे संवत्सरं पुनः //
tatastu vāyubhakṣo 'bhūt saṃvatsaramatandritaḥ pañcāgnimadhye ca tapas tepe saṃvatsaraṃ punaḥ //
Then, untiringly, he lived for a full year subsisting only on air; and again, for another year, he performed austerities seated amid the five fires (pañcāgni).
This verse does not describe Pralaya directly; it highlights tapas (austerity) as a spiritual power that Purāṇic traditions often present as the means by which sages gain insight, merit, and cosmic efficacy.
It models extreme self-restraint and disciplined endurance—qualities the Matsya Purana frequently treats as foundations for righteous rule and ethical living, even if householders practise them in moderated forms (fasts, vows, restraint).
The ritual point is pañcāgni-tapas—an austerity performed amid ‘five fires’ (four fires around and the sun above), a classic rite of heat-endurance used to signify intense penance rather than a Vāstu or temple-building rule.