Matsya Purana — The Gods Seek Śiva’s Refuge: The Cosmic Chariot Prepared for the Burning of T...
ऋग्वेदः सामवेदश्च यजुर्वेदस्तथा परः वेदाश् चत्वार एवैते चत्वारस्तुरगाभवन् //
ṛgvedaḥ sāmavedaśca yajurvedastathā paraḥ vedāś catvāra evaite catvārasturagābhavan //
The Ṛgveda, the Sāmaveda, likewise the Yajurveda, and the other (Atharvaveda)—these are indeed the four Vedas; and these four became (symbolically) four horses.
Directly, it does not describe pralaya; it emphasizes the Purāṇic ordering of sacred knowledge by listing the four Vedas and expressing them through a symbolic image (four horses).
It frames dharma as grounded in Vedic authority: kings and householders are expected to uphold rites, ethics, and governance aligned with the Vedas, here summarized as the four foundational scriptures.
No explicit Vāstu rule appears, but the verse supports ritual orthopraxy: temple worship and consecration procedures in the Matsya Purana are repeatedly anchored in Vedic legitimacy (the four Vedas as the source-base).