Matsya Purana — Cosmic Architecture of Sun–Moon and the ‘Houses of the Gods’
*सूत उवाच एतत्सर्वं प्रवक्ष्यामि सूर्याचन्द्रमसोर्गतिम् यथा देवगृहाणि स्युः सूर्याचन्द्रमसोस्तथा //
*sūta uvāca etatsarvaṃ pravakṣyāmi sūryācandramasorgatim yathā devagṛhāṇi syuḥ sūryācandramasostathā //
Sūta said: “I shall explain all this—the courses of the Sun and the Moon—so that divine temples may be established in a manner consistent with the Sun and Moon.”
This verse does not address pralaya directly; it introduces an applied cosmology—using the Sun and Moon’s motions as authoritative measures for establishing sacred structures.
It frames temple-building as a dharmic, rule-governed act: rulers and household patrons should sponsor and construct devagṛhas according to cosmic order (solar-lunar measures), not merely personal preference.
It signals that temple placement/orientation and planning should be aligned with solar and lunar courses—an early Vāstu principle linking sacred architecture to astronomical directionality and calendrical/ritual timing.