Matsya Purana — Narasimha’s Victory over Hiraṇyakaśipu and the Catalogue of Apocalyptic Omens
तथा परिवहः श्रीमान् उत्पातभयशंसिनः इत्येवं क्षुभिताः सप्त मरुतो गगनेचराः //
tathā parivahaḥ śrīmān utpātabhayaśaṃsinaḥ ityevaṃ kṣubhitāḥ sapta maruto gaganecarāḥ //
Likewise, the splendid wind called Parivaha—foretelling fear through ominous portents—thus, the seven sky-roaming winds (Maruts) become violently agitated.
It frames violent atmospheric disturbance—especially the agitation of the “seven winds”—as an utpāta (ominous sign) that can herald large-scale calamity and Pralaya-like disorder.
In the Matsya Purana’s omen-literature, recognizing utpātas is part of prudent governance and household vigilance—prompting protective rites, charity, restraint, and practical preparedness when nature shows fearful signs.
The verse itself is not a Vāstu rule, but it supports the ritual response to omens: when winds and skies are disturbed, one performs śānti (appeasement rites) and avoids initiating major constructions or consecrations until conditions become auspicious.