Matsya Purana — Inquiry into Taraka’s Slaying and the Prelude to Guha
पुत्रं प्रजापते देहि शक्रजेतारमूर्जितम् यो नास्त्रशस्त्रैर्वध्यत्वं गच्छेत्त्रिदिववासिनाम् //
putraṃ prajāpate dehi śakrajetāramūrjitam yo nāstraśastrairvadhyatvaṃ gacchettridivavāsinām //
“O Prajāpati, grant me a son—strong and full of might—who can conquer Śakra (Indra), and who would not fall into the state of being slain by the weapons and missiles of the dwellers of heaven.”
This verse does not address Pralaya directly; it focuses on a boon-request within a dynastic/royal narrative—seeking progeny, power, and immunity from celestial weapons.
It reflects the householder-king ideal of seeking lineage continuity (putra) and political security; however, the request for conquering Indra and invulnerability signals an ambition that the Purāṇas often frame as a dangerous, power-driven boon requiring dharmic restraint.
No Vāstu or temple-architecture rule is stated here; the ritual element is implicit in boon-seeking devotion—petitioning Prajāpati through prayer as part of Purāṇic religious practice.