Matsya Purana — War of Devas and Asuras; Birth of Aurva Fire; Countering Tamasī Māyā through ...
ब्रह्यचर्याद्ब्राह्मणस्य ब्राह्मणत्वं विधीयते एवमाहुः परे लोके ब्रह्मचर्यविदो जनाः //
brahyacaryādbrāhmaṇasya brāhmaṇatvaṃ vidhīyate evamāhuḥ pare loke brahmacaryavido janāḥ //
It is through brahmacarya (disciplined celibate studentship) that a brāhmaṇa’s true brāhmaṇa-status is established; thus declare, in the other world as well, those people who know the meaning of brahmacarya.
Nothing directly—this verse is ethical instruction, emphasizing brahmacarya as the sustaining principle of spiritual authority rather than describing pralaya or cosmology.
It supports rajadharma indirectly: rulers and householders should honor and promote education and self-discipline, recognizing that true brāhmaṇa authority rests on conduct (brahmacarya), not merely birth or claim.
No vastu or temple-architecture rule is stated; the ritual takeaway is that purity and restraint (brahmacarya) are presented as prerequisites for effective Vedic learning and priestly qualification.