Matsya Purana — Narasimha’s Victory over Hiraṇyakaśipu and the Catalogue of Apocalyptic Omens
विवर्णतां च भगवान् गतो दिवि दिवाकरः कृष्णं कबन्धं च तथा लक्ष्यते सुमहद्दिवि //
vivarṇatāṃ ca bhagavān gato divi divākaraḥ kṛṣṇaṃ kabandhaṃ ca tathā lakṣyate sumahaddivi //
In the sky, the revered Sun too has turned pale; and in the heavens a vast black ‘kabandha’—a headless, trunk-like apparition—is likewise seen.
The verse presents classic utpāta-lakṣaṇas (portents): the Sun losing its normal brilliance and the appearance of a dark, monstrous form in the sky—signals of cosmic imbalance often associated with impending calamity or pralaya-like disturbance.
In Purāṇic ethics, ominous celestial signs prompt heightened vigilance: rulers are expected to protect the realm through dhārmic governance, charity, and public rites; householders respond with restraint, prayer, and prescribed expiations rather than panic or adharma.
No direct Vāstu rule is stated, but the ritual implication is strong: such omens traditionally call for śānti-karma (pacificatory rites), homa, and protective observances to restore auspiciousness before undertaking major works like temple-building or consecrations.