Matsya Purana — The Greatness and Procedure of the Sarva-Phala-Tyaga Vrata
एतद्भागवतानां तु सौरवैष्णवयोगिनाम् शुभं सर्वफलत्यागव्रतं वेदविदो विदुः //
etadbhāgavatānāṃ tu sauravaiṣṇavayoginām śubhaṃ sarvaphalatyāgavrataṃ vedavido viduḥ //
The knowers of the Veda declare that this auspicious vow—renunciation of all fruits, ritual and worldly—is meant for the devotees of the Lord, for the Sauras and the Vaiṣṇavas, and for yogins.
This verse does not discuss pralaya directly; it teaches a dharma principle—renouncing attachment to results (phala-tyāga)—as an auspicious vow for devotees and yogins.
It supports niṣkāma-dharma: a king or householder should perform prescribed duties and rituals while relinquishing claim over their results, dedicating outcomes to the divine rather than acting from personal gain.
The ritual significance is the identification of a specific vrata—sarvaphala-tyāga—emphasizing inner renunciation as the core discipline, rather than any Vāstu or temple-construction rule.