Matsya Purana — Yuga Durations
ततो ऽहनि गते तस्मिन् सर्वेषामेव जीविनाम् शरीरनिर्वृतिं दृष्ट्वा लोकसंहारबुद्धितः //
tato 'hani gate tasmin sarveṣāmeva jīvinām śarīranirvṛtiṃ dṛṣṭvā lokasaṃhārabuddhitaḥ //
Then, when that day had passed, seeing that the bodies of all living beings had become inert and lifeless, he—concluding in his mind that the dissolution of the world had arrived—became convinced of universal destruction.
It presents a key pralaya-omen: widespread bodily stillness or lifelessness among beings, prompting the conclusion that loka-saṃhāra (world-dissolution) is underway.
By framing calamity as a signal requiring discernment, it supports the Purāṇic ethic of preparedness—responding to ominous conditions with protective action, restraint, and seeking divine/wise guidance rather than panic.
No direct Vāstu or temple-rule detail appears in this verse; its practical takeaway is diagnostic—recognizing inauspicious signs that, elsewhere in the Matsya Purana, would trigger expiatory rites (śānti) and protective observances.