Matsya Purana — Dynastic Genealogies: Paurava–Anu Lines
कथं चोत्पादितास्तेन तन्नः प्रब्रूहि पृच्छताम् माहात्म्यं च प्रभावं च निखिलेन वदस्व तत् //
kathaṃ cotpāditāstena tannaḥ prabrūhi pṛcchatām māhātmyaṃ ca prabhāvaṃ ca nikhilena vadasva tat //
How, indeed, were they brought into being by him? Tell us—who are asking—about that. Also declare, in full, its greatness and its power.
It frames a direct inquiry into how certain beings or elements were “brought into being,” asking for a complete account of their origin and their effective power—an opening typical of creation-focused (sarga) exposition rather than describing dissolution itself.
The verse models dharmic inquiry: rulers and householders are encouraged to ask qualified teachers about origins, sacred greatness (māhātmya), and practical efficacy (prabhāva) before adopting doctrines, vows, or rites.
No specific Vāstu or temple rule is stated here; however, the request for māhātmya and prabhāva aligns with how ritual manuals justify practices—by explaining both their sacred status and their tangible efficacy.