Matsya Purana — Nārāyaṇa as Haṃsa in the Cosmic Ocean: Vedic Yajña-Puruṣa and Mārkaṇḍeya’s Vi...
अगाधसलिले तस्मिन् मार्कण्डेयः सविस्मयः प्लवंस्तथार्तिम् अगमद् भयात्संत्रस्तलोचनः //
agādhasalile tasmin mārkaṇḍeyaḥ savismayaḥ plavaṃstathārtim agamad bhayātsaṃtrastalocanaḥ //
In that unfathomably deep expanse of water, Mārkaṇḍeya—astonished—kept floating about, and then, out of fear, he fell into distress, his eyes trembling with terror.
It depicts the lived, psychological reality of Pralaya: an immeasurable oceanic flood where even a great sage experiences disorientation, awe, and fear—signaling the overwhelming power of cosmic dissolution.
Indirectly, it underscores a core Purāṇic ethic: worldly stability is fragile, so kings and householders should cultivate dharma, charity, and devotion as lasting supports when external order collapses.
No direct Vāstu or ritual rule is stated; the takeaway is contextual—Pralaya imagery in the Matsya Purana often frames why sacred rites and dharmic foundations (including temple culture) are valued as anchors amid impermanence.