Matsya Purana — Manvantaras
स्मार्तो वर्णाश्रमाचारो यमैश्च नियमैर्युतः पूर्वेभ्यो वेदयित्वेह श्रौतं सप्तर्षयो ऽब्रुवन् //
smārto varṇāśramācāro yamaiśca niyamairyutaḥ pūrvebhyo vedayitveha śrautaṃ saptarṣayo 'bruvan //
The Smārta code of conduct for the disciplines of varṇa and āśrama—endowed with the yamas and niyamas—having been taught here to the ancients, the Seven Sages then proclaimed the Śrauta (Vedic sacrificial) system.
This verse does not address pralaya directly; it frames how dharma is transmitted—first Smārta varṇāśrama conduct grounded in yama-niyama, then the Śrauta sacrificial system proclaimed by the Saptarishis.
It prioritizes ethical self-discipline (yamas and niyamas) as the foundation of varṇāśrama duties—guiding householders in daily conduct and supporting kings in upholding social-religious order—before engaging in formal Śrauta rites.
Its ritual significance is the sequencing and authority of practice: Smārta conduct and inner discipline are taught first, and then the Śrauta sacrificial tradition—validated by the Saptarishis—is proclaimed as the formal Vedic ritual framework.