Matsya Purana — Solar Dynasty Prelude: Vivasvān–Saṃjñā–Chāyā
बालभावान्मया किंचिद् उद्यतश् चरणः सकृत् मनुना वार्यमाणापि मम शापम् अदाद् विभो //
bālabhāvānmayā kiṃcid udyataś caraṇaḥ sakṛt manunā vāryamāṇāpi mama śāpam adād vibho //
O Lord, out of childishness I once impulsively lifted my foot a little; though Manu tried to restrain me, I still uttered a curse—O Mighty One.
Indirectly, it frames the Pralaya-era Matsya–Manu narrative as governed by moral causality: even small impulsive acts and harsh speech (a curse) have consequences within the cosmic order upheld during dissolution and renewal.
It highlights restraint (nigraha) and measured speech as dharmic duties: even when corrected by an elder/authority (Manu), one should control impulse and avoid harmful words that can disrupt social and ethical order.
No direct Vastu Shastra or ritual procedure is stated here; the takeaway is ethical—self-control and avoiding rash pronouncements—principles that also underlie disciplined ritual conduct in the Matsya Purana.