Matsya Purana — Cosmic Architecture of Sun–Moon and the ‘Houses of the Gods’
शनैश्चरो ऽविशत्स्थानम् एवं शानैश्चरं तथा बुधो ऽपि वै बुधस्थानं भानुं स्वर्भानुरेव च //
śanaiścaro 'viśatsthānam evaṃ śānaiścaraṃ tathā budho 'pi vai budhasthānaṃ bhānuṃ svarbhānureva ca //
Śanaiścara (Saturn) entered his own station; thus each planet entered its respective place. Budha (Mercury) too entered the station of Budha; and Bhānu (the Sun) as well, and Svarbhānu (Rāhu) also.
This verse is not describing Pralaya directly; it presents an ordered settling of grahas into their respective stations, a cosmographic/jyotiṣa detail rather than a flood or dissolution passage.
By naming grahas and their stations, it supports the jyotiṣa framework used for calendrical timing (muhūrta), eclipses, and auspicious/inauspicious considerations—tools traditionally consulted by kings for governance and by householders for rites and life-cycle rituals.
Indirectly ritual: graha-sthāna knowledge underpins selecting auspicious times for temple consecration, image installation, and major rites; the verse itself does not give Vāstu measurements but supplies the planetary context often used in ritual scheduling.