Matsya Purana — The Pushkara Manifestation
ततः सो ऽथाब्रवीद्वाक्यं किं करोमि पितामह पितामहसमाज्ञातो ब्रह्माणं समुपस्थितः //
tataḥ so 'thābravīdvākyaṃ kiṃ karomi pitāmaha pitāmahasamājñāto brahmāṇaṃ samupasthitaḥ //
Then he spoke these words: “Grandfather (Pitāmaha), what shall I do?”—and, having been summoned by Pitāmaha’s command, he presented himself before Brahmā.
Indirectly, it shows the administrative chain of authority in cosmic events: when decisive action is needed (often in creation/dissolution narratives), the agent seeks instruction from Pitāmaha (Brahmā), indicating that pralaya-related duties proceed by divine command.
It models dharmic conduct: when uncertain about right action, one should ask an elder/authority (“What shall I do?”) and act according to injunction (ājñā). This mirrors a king’s reliance on śāstra and counsel, and a householder’s reliance on guru/elders.
No direct Vāstu or ritual procedure is stated; the takeaway is procedural: sacred works (including temple rites or construction) are ideally undertaken after receiving proper authorization and instruction from a qualified authority.