Matsya Purana — Catalogue of the Eighteen Puranas
व्यासरूपमहं कृत्वा संहरामि युगे युगे चतुर्लक्षप्रमाणेन द्वापरे द्वापरे सदा //
vyāsarūpamahaṃ kṛtvā saṃharāmi yuge yuge caturlakṣapramāṇena dvāpare dvāpare sadā //
Assuming the form of Vyāsa, I gather and compile the Veda again and again in every age; and in each Dvāpara Yuga, unfailingly, I arrange it to the measure of four hundred thousand verses.
It implies a cyclic cosmos where knowledge must be re-collected each age; rather than describing the flood directly, it highlights how sacred revelation is preserved and reorganized across recurring yuga cycles.
It supports the duty of rulers and householders to protect, study, and transmit śāstra: when the divine itself re-establishes Vedic order each cycle, human society is expected to uphold learning, patronize teachers, and follow dharma grounded in the Veda.
No direct Vāstu or temple rule appears here; the ritual takeaway is the primacy of Vedic compilation and standardization as the basis for correct ritual performance in each age.