Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
वासांसि च पिशङ्गानि जलकुम्भयुतानि च स याति वैष्णवं लोकं पितॄणां तारयेच्छतम् कल्पान्ते राजराजः स्यात् पितृव्रतम् इदं स्मृतम् //
vāsāṃsi ca piśaṅgāni jalakumbhayutāni ca sa yāti vaiṣṇavaṃ lokaṃ pitṝṇāṃ tārayecchatam kalpānte rājarājaḥ syāt pitṛvratam idaṃ smṛtam //
He who offers tawny-hued garments together with water-pots (for ritual gifting) attains the Vaiṣṇava realm; he delivers a hundred of his ancestors. At the end of the aeon he becomes a king of kings—such is declared to be the Pitṛ-vrata, the vow for the ancestors.
It references the cosmic cycle indirectly—“at the end of the kalpa”—to state the long-range karmic result of the vow, not to describe pralaya events themselves.
It frames pitṛ-rites as a dharmic obligation fulfilled through dāna (gifting garments and ritual water-pots), promising both spiritual uplift (attaining Vishnu’s realm) and worldly sovereignty (becoming a king of kings).
The ritual detail is dāna-centered: gifting specific items—tawny garments and jalakumbhas—used in ancestor-oriented observances; it highlights prescribed materials and offerings rather than temple architecture.