Matsya Purana — War of Devas and Asuras; Birth of Aurva Fire; Countering Tamasī Māyā through ...
मनसा निर्मिता योनिर् आधातव्या तपस्विभिः न दारयोगो बीजं वा व्रतमुक्तं तपस्विनाम् //
manasā nirmitā yonir ādhātavyā tapasvibhiḥ na dārayogo bījaṃ vā vratamuktaṃ tapasvinām //
For ascetics, the ‘womb’ is to be established as mind-created; for tapasvins, the observance is declared to be free from (worldly) vows—there is to be neither union with a wife nor the sowing of seed.
It does not describe cosmic pralaya directly; it uses creation-language metaphorically—teaching that an ascetic’s ‘source’ (yoni) is mental/spiritual rather than physical procreation.
It contrasts renunciant dharma with householder duty: kings and householders sustain lineage through marriage and progeny, while tapasvins are instructed to renounce conjugal life and procreative acts as part of their spiritual discipline.
No Vastu or temple-building rule appears here; the ‘vrata-mukta’ point is a ritual takeaway—ascetics are portrayed as beyond many conventional household observances, emphasizing inner discipline over external rites.