Matsya Purana — War of Devas and Asuras; Birth of Aurva Fire; Countering Tamasī Māyā through ...
एते तपसि तिष्ठन्ति व्रतैरपि सुदुष्करैः ब्रह्मचर्यं पुरस्कृत्य प्रार्थयन्ति परां गतिम् //
ete tapasi tiṣṭhanti vratairapi suduṣkaraiḥ brahmacaryaṃ puraskṛtya prārthayanti parāṃ gatim //
These remain steadfast in austerity, undertaking even extremely difficult vows; placing brahmacarya (continence and sacred discipline) in the forefront, they pray for the highest state of liberation.
This verse does not describe Pralaya directly; it emphasizes the inner discipline (tapas, hard vows, and brahmacarya) by which seekers aim for the supreme state beyond worldly cycles.
While focused on ascetics, it sets a benchmark of self-restraint: kings and householders in the Matsya Purana are repeatedly urged to uphold vrata-like discipline—especially control of senses and ethical conduct—as the foundation of righteous rule and orderly life.
No Vastu or temple-architecture rule is stated; the ritual takeaway is the primacy of vrata and brahmacarya as core disciplines supporting higher spiritual aims.