Matsya Purana — Bhīma-Dvādaśī
किमज्ञातं महादेव त्वत्प्रसादादधोक्षज स्वल्पकेनाथ तपसा महत्फलमिहोच्यताम् //
kimajñātaṃ mahādeva tvatprasādādadhokṣaja svalpakenātha tapasā mahatphalamihocyatām //
O Great Lord, O Adhokṣaja—what remains unknown for one who has your grace? Yet, O Master, please declare here what great result is obtained even by a small measure of austerity (tapas).
This verse does not directly describe pralaya; it emphasizes that divine grace (prasāda) makes ultimate truths accessible, framing spiritual knowledge as dependent on the Lord rather than on cosmic events.
It supports the Matsya Purana’s ethic that even limited, sincere discipline (tapas)—such as vows, restraint, charity, and worship performed amid responsibilities—can yield great spiritual benefit when aligned with devotion and right intention.
No explicit Vāstu or iconographic rule appears here; ritually, it underscores the principle that modest observances and penances, performed correctly and with devotion, can produce disproportionate merit.