Matsya Purana — Purūravas Witnesses the Sports of Apsarases and Gandharvas; Attains the Grace...
सुस्नातदेवगन्धर्वदेवरामागणेन च पूज्यमानं च ददृशे देवदेवं जनार्दनम् //
susnātadevagandharvadevarāmāgaṇena ca pūjyamānaṃ ca dadṛśe devadevaṃ janārdanam //
He beheld Janārdana—the God of gods—being worshipped by hosts of devas and gandharvas, all purified by sacred bathing and adorned with divine fragrances.
This verse does not describe pralaya directly; it highlights a devotional vision where cosmic beings worship Viṣṇu, implying his supreme status beyond cyclical creation and dissolution.
It underscores śauca (purity) and upacāra (proper offerings): bathing/cleanliness and respectful worship—core duties for householders and rulers who maintain dharma through public and private rites.
Ritually, it emphasizes snāna (purificatory bathing) and gandha (fragrance/perfumes) as standard components of pūjā; these are common temple-worship upacāras in Purāṇic practice.