Matsya Purana — Yadu Lineage
संमोहयति रूपेण मामकेनैष वो ऽसुराः श्रुत्वा तस्य ततस्ते वै समेत्य तु ततो ऽब्रुवन् //
saṃmohayati rūpeṇa māmakenaiṣa vo 'surāḥ śrutvā tasya tataste vai sametya tu tato 'bruvan //
“By assuming my very form, he is deluding you Asuras.” Hearing this, they then assembled together and spoke thereafter.
It does not describe Pralaya directly; it highlights divine māyā—strategic delusion through assumed form—often used in Purāṇic narratives surrounding cosmic crises.
Indirectly, it underscores discernment (viveka): rulers and householders are cautioned in Purāṇic ethics to test appearances, avoid deception, and deliberate collectively before action—mirrored by the assembly and consultation described here.
None is explicit in this verse; it is narrative and political/cosmic in tone rather than Vāstu or ritual procedure.