Matsya Purana — Bhīma-Dvādaśī
कुरुभिर्देवगन्धर्वैर् अभितः कैटभार्दनः प्रवृत्तासु पुराणीषु धर्मसम्बन्धिनीषु च //
kurubhirdevagandharvair abhitaḥ kaiṭabhārdanaḥ pravṛttāsu purāṇīṣu dharmasambandhinīṣu ca //
Surrounded by the Kurus, and likewise by Devas and Gandharvas, the Slayer of Kaiṭabha (Viṣṇu) was present as the Purāṇas—discourses connected with Dharma—were set in motion, recited, and propagated.
This verse does not describe Pralaya directly; it highlights the sacred transmission of Dharma-linked Purāṇic narratives in an august assembly with Vishnu (Kaiṭabhārdana) present.
By stressing that Purāṇas are “dharma-sambandhinī,” the verse implies that rulers and householders should learn and uphold Dharma through authoritative Purāṇic instruction and public recitation traditions.
No Vāstu or temple-rule detail is stated here; the ritual significance is the idea of Purāṇa-śravaṇa (listening/recitation) in a sanctified assembly as a Dharma-supporting practice.