Matsya Purana — Prologue to the Matsya Purana and the Manu–Pralaya Rescue Narrative
ततो लयान्ते सर्वस्य स्थावरस्य चरस्य च प्रजापतिस्त्वं भविता जगतः पृथिवीपते //
tato layānte sarvasya sthāvarasya carasya ca prajāpatistvaṃ bhavitā jagataḥ pṛthivīpate //
Then, at the end of the dissolution of all beings—both the immovable and the moving—O lord of the earth, you will become Prajāpati, the progenitor of the world.
It states that after the cosmic dissolution ends, the world is repopulated again, and the addressed king is destined to become a Prajāpati—an agent of renewed creation.
By calling the king a future Prajāpati, it frames kingship as stewardship of life and social continuity—protecting beings and enabling orderly regeneration of society after crisis.
No direct Vāstu or ritual procedure is stated; the verse is primarily cosmological and political-theological, establishing Manu/kingly authority as divinely sanctioned for rebuilding the world.