Matsya Purana — The Rite of the Jaggery-Cow
अयने विषुवे पुण्ये व्यतीपाते ऽथवा पुनः गुडधेन्वादयो देयास् तूपरागादिपर्वसु //
ayane viṣuve puṇye vyatīpāte 'thavā punaḥ guḍadhenvādayo deyās tūparāgādiparvasu //
At the ayanas (solstices), at the sacred viṣuvas (equinoxes), and on the auspicious Vyatīpāta; likewise, on festival occasions such as eclipses and the like, one should give the prescribed gifts—such as the “guḍa-dhenu” (jaggery-cow) and other appointed donations.
It does not describe Pralaya directly; instead, it teaches dharmic timing—identifying specific cosmic/astronomical junctures (ayana, viṣuva, Vyatīpāta, eclipses) as especially potent for merit through charity.
It frames a core duty of householders and rulers: supporting society through timely dāna. By giving on parva days (eclipses, solstices, equinoxes, Vyatīpāta), one is said to amplify puṇya, aligning personal wealth and governance with dharma.
The significance is ritual-calendar based rather than architectural: it prescribes high-auspicious times for performing dāna (e.g., guḍadhenu) during eclipses and major solar transitions—key “Matsya Purana ritual timing” guidance.