Matsya Purana — The Kauśika Descendants: Śrāddha
एवं सा भक्षिता धेनुः सप्तभिस्तैस्तपोधनैः वैदिकं बलमाश्रित्य क्रूरे कर्मणि निर्भयाः //
evaṃ sā bhakṣitā dhenuḥ saptabhistaistapodhanaiḥ vaidikaṃ balamāśritya krūre karmaṇi nirbhayāḥ //
Thus that cow was eaten by those seven ascetic sages, rich in austerity (tapodhana); relying upon the power of the Veda, they were fearless even in that cruel deed.
This verse does not describe Pralaya directly; it highlights how characters in the Purana claim fearlessness by relying on “Vedic power,” showing the text’s emphasis on ritual-austerity potency rather than cosmic dissolution here.
By portraying even ascetics as capable of “cruel deeds” when driven by circumstance and justified by ritual power, the verse implicitly warns kings/householders that dharma is not merely authority or power-based—actions (especially harm) must be weighed ethically, not excused solely through status or ritual competence.
Architectural (Vāstu) significance is not present; the ritual takeaway is the phrase “vaidikaṃ balam”—the Purana underscores confidence placed in Vedic mantras/rites as a form of spiritual force influencing conduct and perceived immunity from fear.