Matsya Purana — Uma’s Austerities and the Slaying of the Deceiver Asura ĀḌi
भुजगरूपं संत्यज्य बभूवाथ महासुरः उमारूपी छलयितुं गिरिशं मूढचेतनः //
bhujagarūpaṃ saṃtyajya babhūvātha mahāsuraḥ umārūpī chalayituṃ giriśaṃ mūḍhacetanaḥ //
Abandoning his serpent-form, the great asura then assumed the form of Umā, intending to deceive Girīśa (Śiva)—his mind deluded.
This verse does not discuss pralaya; it highlights moral and psychological themes—illusion (māyā) and delusion (moha)—through an asura’s attempt to deceive Śiva by assuming Umā’s form.
It cautions against deceit and impersonation, implying that rulers and householders should cultivate discernment and uphold truthfulness (satya) and integrity, since deluded intent leads to adharmic action.
No vastu-śāstra, temple-building, or ritual procedure is stated in this verse; its significance is narrative and ethical, illustrating the misuse of disguise and the danger of deluded intention.