Matsya Purana — Mahāgaurī’s Entry
गते वर्षसहस्रे तु देवास्त्वरितमानसाः ज्वलनं चोदयामासुर् ज्ञातुं शंकरचेष्टितम् //
gate varṣasahasre tu devāstvaritamānasāḥ jvalanaṃ codayāmāsur jñātuṃ śaṃkaraceṣṭitam //
When a thousand years had passed, the gods—anxious and quickened in mind—urged Jvalana (Agni) to find out the intention and action of Śaṅkara (Śiva).
This verse does not describe Pralaya directly; it depicts a long divine timespan (a thousand years) and the gods’ inquiry into Śiva’s conduct, reflecting cosmic governance rather than dissolution.
Indirectly, it models dharmic governance: when faced with uncertainty, responsible leaders seek verification through a competent messenger rather than acting rashly—mirroring a king’s duty to investigate before judgment.
No Vāstu or temple-architecture rule is stated here; the ritual-theological point is the prominence of Agni as an agent of divine communication and investigation in Purāṇic narratives.