Matsya Purana — Design and Splendour of Tripura: Maya’s Threefold Moving Fortress
मेरुपर्वतसंकाशं मयस्यापि पुरं महत् पुष्यसंयोगमात्रेण कालेन स मयः पुरा //
meruparvatasaṃkāśaṃ mayasyāpi puraṃ mahat puṣyasaṃyogamātreṇa kālena sa mayaḥ purā //
Māya’s great city too was like Mount Meru in splendour; and in former times, that Māya accomplished it merely by choosing the proper time—when the asterism Puṣya was in conjunction.
It does not discuss Pralaya directly; it highlights orderly creation—great building works succeeding through correct muhurta, especially the Puṣya conjunction.
It implies that rulers and householders should undertake city-building and construction with disciplined planning, including selecting auspicious timing (muhurta) to ensure stability and prosperity.
It foregrounds nakshatra-based muhurta in Vastu: Puṣya-saṃyoga is presented as a highly auspicious alignment for founding or accomplishing major construction such as a fortified city.