Matsya Purana — The Strategy to Defeat Tāraka: Pārvatī’s Birth
कर्त्रा प्रणीता मर्यादा स्थिता संसारिणामियम् यो जायते हि यद्बीजो जनितुः स ह्यसार्थकः //
kartrā praṇītā maryādā sthitā saṃsāriṇāmiyam yo jāyate hi yadbījo janituḥ sa hyasārthakaḥ //
This boundary of conduct, established by the Creator, stands for all embodied beings: whatever “seed” a man begets, if it is born contrary to that order, then the begetter’s act becomes futile, devoid of true purpose.
It does not describe Pralaya directly; it emphasizes the Creator-established moral order (maryādā) that governs embodied life in the world.
It frames procreation as a dharmic responsibility: a householder (and by extension a king safeguarding social order) should ensure conduct and lineage align with established maryādā, otherwise begetting becomes ‘fruitless’ in its higher purpose.
No Vāstu or temple-building rule is stated; the verse is ethical-normative, focusing on maryādā (regulated order) rather than ritual procedure or architecture.