Matsya Purana — Vishnu’s Names Across Yugas and the Gods’ Refuge During the Tārakāmaya War
एतस्मिन्नन्तरे मेघा निर्वाणाङ्गारवर्चसः सार्कचन्द्रग्रहगणं छादयन्तो नभस्तलम् //
etasminnantare meghā nirvāṇāṅgāravarcasaḥ sārkacandragrahagaṇaṃ chādayanto nabhastalam //
Meanwhile, clouds with the dull glow of extinguished embers spread out, veiling the entire sky along with the sun, the moon, and the host of planets.
It describes a classic pralaya-omen: ashen, lightless clouds obscure the sun, moon, and planets, signaling a breakdown of normal cosmic order and visibility.
As a warning-sign passage, it supports the Purana’s broader ethic: when disorder appears in nature, a ruler or householder should intensify dharmic conduct—protection, charity, and ritual steadiness—rather than panic or exploitation.
No direct Vastu rule is stated, but such sky-omens are typically treated as ritual triggers—prompting śānti (appeasement) rites and protective observances before undertaking major acts like consecrations or large constructions.