Matsya Purana — Cosmic Architecture of Sun–Moon and the ‘Houses of the Gods’
योजनार्धप्रमाणानि तेभ्यो ह्रस्वं न विद्यते उपरिष्टात्तु ये तेषां ग्रहा ये क्रूरसात्त्विकाः //
yojanārdhapramāṇāni tebhyo hrasvaṃ na vidyate upariṣṭāttu ye teṣāṃ grahā ye krūrasāttvikāḥ //
Their measures are half a yojana; among them nothing is found smaller than that. And the planets that lie above them are described as fierce in nature, yet marked by a predominance of sattva.
This verse does not directly discuss pralaya; it focuses on cosmographic measurement (yojana-based sizing) and the hierarchical placement and qualities of grahas (planets) within the ordered universe.
Indirectly, it supports dharmic life through jyotiṣa—understanding planetary order and qualities was traditionally used for calendrical timing, rites, and governance decisions, though no explicit royal/householder duty is stated in this verse.
The verse itself is astronomical, but its emphasis on precise measures (yojana) aligns with the Purāṇic habit of standardizing sacred measurement—an idea that also underpins ritual timing and, by extension, proportional thinking in temple/ritual layouts.