Matsya Purana — Narasimha’s Victory over Hiraṇyakaśipu and the Catalogue of Apocalyptic Omens
नारसिंहं वपुर्देवः स्थापयित्वा सुदीप्तिमत् पौराणं रूपमास्थाय प्रययौ गरुडध्वजः //
nārasiṃhaṃ vapurdevaḥ sthāpayitvā sudīptimat paurāṇaṃ rūpamāsthāya prayayau garuḍadhvajaḥ //
Having established the radiant Narasiṃha form, the Lord—bearing Garuḍa as His banner—then assumed His ancient, primeval form and departed.
This verse is not about pralaya; it emphasizes divine manifestation and withdrawal—how the Lord establishes a specific avatāra-form (Narasiṃha) and then returns to a primordial form, reflecting controlled divine appearance rather than cosmic dissolution.
Indirectly, it supports the Purāṇic ethic of proper worship: rulers and householders are to establish (sthapana) the deity’s form with reverence and follow tradition, recognizing the Lord’s sovereignty beyond any single visible manifestation.
The key ritual term is "sthapayitvā"—the formal establishing/installation of a deity form, a core idea behind temple consecration and icon placement in Matsya Purana-style pratima and temple practice.