Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
स वैष्णवं पदं याति लक्ष्मीवाञ्जन्मजन्मनि एतत् सम्पद्व्रतं नाम सदा पापविनाशनम् //
sa vaiṣṇavaṃ padaṃ yāti lakṣmīvāñjanmajanmani etat sampadvrataṃ nāma sadā pāpavināśanam //
He attains the supreme Vaiṣṇava state and is endowed with Lakṣmī (prosperity) in birth after birth. This is called the Sampad-vrata, and it is ever a destroyer of sins.
This verse does not discuss Pralaya; it teaches the fruit of a Vishnu-centered vow—attaining the Vaishnava goal and gaining prosperity across lifetimes.
It frames vrata-observance as a practical dharmic duty: by keeping the Sampad-vrata, a householder or ruler seeks ethical prosperity (Lakshmi) and purification from sin, supporting stable governance and righteous livelihood.
The ritual significance is the identification of a specific vow (Sampad-vrata) whose stated results are Vaishnava attainment and sin-destruction; no Vastu or temple-building rule is mentioned in this verse.