Matsya Purana — Origin of Soma
नक्षत्रदैत्यासुरसैन्ययुक्तः शनैश्चराङ्गारकवृद्धतेजाः जग्मुर्भयं सप्त तथैव लोकाश् चचाल भूर् द्वीपसमुद्रगर्भा //
nakṣatradaityāsurasainyayuktaḥ śanaiścarāṅgārakavṛddhatejāḥ jagmurbhayaṃ sapta tathaiva lokāś cacāla bhūr dvīpasamudragarbhā //
Joined with the hosts of the Nakṣatras, Daityas, and Asuras, Śanaiścara (Saturn) and Aṅgāraka (Mars) blazed with intensified radiance. Fear seized the seven worlds, and the earth—bearing within it islands and oceans—began to quake and heave.
It presents pralaya-like portents: hostile cosmic forces and intensified planetary energies (Saturn and Mars) trigger fear across the seven worlds and physical instability of the earth—classic signs of approaching large-scale upheaval.
Such inauspicious graha-omens imply heightened vigilance: rulers should intensify protection and ritual appeasements, while householders should follow dharmic restraint, charity, and protective rites rather than beginning risky new ventures under feared planetary conditions.
Though not giving direct Vāstu rules, it signals a ritual principle used in Vāstu and temple practice: avoid major constructions and consecrations during severe inauspicious omens; instead perform śānti (pacificatory) rites for grahas and bhūmi (earth) to restore stability.