*मनुरुवाच उत्पत्तिं प्रलयं चैव वंशान्मन्वन्तराणि च वंश्यानुचरितं चैव भुवनस्य च विस्तरम् //
*manuruvāca utpattiṃ pralayaṃ caiva vaṃśānmanvantarāṇi ca vaṃśyānucaritaṃ caiva bhuvanasya ca vistaram //
マヌは言った。「(我に説き示したまえ)生成と滅尽、諸王統とマンヴァンタラ、諸系譜に生まれし者たちの事績、さらに諸世界の広がりと配列の全体を。」
It frames the teaching agenda: Manu explicitly asks for an explanation of both cosmic origination (utpatti) and cosmic dissolution (pralaya), indicating the Purana’s concern with cyclical cosmology.
By requesting dynasties (vaṃśa) and the deeds of descendants (vaṃśyānucarita), Manu seeks precedent and moral-political guidance embedded in genealogies—models of governance, conduct, and responsibility transmitted through royal and ancestral narratives.
Direct architectural rules are not stated; however, “bhuvanasya vistara” signals a cosmographic mapping of worlds that later supports ritual orientation and sacred space planning (a foundation often used when deriving temple/mandala symbolism in Puranic traditions).