Matsya Purana — The Strategy to Defeat Tāraka: Pārvatī’s Birth
स्फुटालोके शशभृति भ्रान्तिरात्रिविहंगमे रजनीचरभूतानां संघैरावृतचत्वरे //
sphuṭāloke śaśabhṛti bhrāntirātrivihaṃgame rajanīcarabhūtānāṃ saṃghairāvṛtacatvare //
When the moon shines with a clear light, yet night-birds wander in confusion, and the public crossroads are thronged—covered over—by bands of nocturnal beings, it is taken as an inauspicious sign.
It does not describe Pralaya directly; it treats observable omens—disorder at night despite clear moonlight—as a sign of unseen disturbance affecting a settlement.
For a king or civic authority, a crossroads overrun by night-roaming forces symbolizes breakdown of public order and protection; it signals the need for vigilance, pacificatory rites, and restoring safety in public spaces.
The catvara (crossroads/public square) is a key node in Vastu-based civic layout; abnormal nocturnal activity there is treated as a Vastu/omen indicator, often prompting śānti (appeasement) measures and corrective planning or cleansing rites.