Matsya Purana — Indra Sends Soma to Battle: Frost-Weapon
त्वमादित्यपथादूर्ध्वं ज्योतिषां चोपरि स्थितः तमः प्रोत्सार्य महसा भासयस्यखिलं जगत् //
tvamādityapathādūrdhvaṃ jyotiṣāṃ copari sthitaḥ tamaḥ protsārya mahasā bhāsayasyakhilaṃ jagat //
You stand above the path of the Sun and even beyond all the luminaries; driving away darkness by your own radiance, you illuminate the entire universe.
It presents the Lord as the transcendent source of all illumination—beyond the sun and stars—implying that cosmic order (and its re-emergence after Pralaya) depends on that supreme radiance which dispels primordial darkness (tamas).
By portraying the ideal of dispelling darkness through “mahas” (radiance), the verse supports an ethical model: a king should remove social ‘darkness’ (injustice, ignorance) through righteous governance, and a householder should cultivate clarity through discipline, learning, and worship.
While not a direct Vāstu rule, it reinforces a key ritual-architectural principle: temples and rites are oriented toward light (Āditya symbolism), treating illumination as sacred—supporting practices like east-facing sanctums and sunrise-linked worship in Puranic temple traditions.