Matsya Purana — Vishnu’s Battle with Mathana
जघ्ने जनार्दनं चापि परिघेणाग्निवर्चसा विष्णुस्तेन प्रहारेण किंचिदाघूर्णितो ऽभवत् //
jaghne janārdanaṃ cāpi parigheṇāgnivarcasā viṣṇustena prahāreṇa kiṃcidāghūrṇito 'bhavat //
He struck Janārdana as well with a parigha blazing like fire; by that blow, Viṣṇu was for a moment shaken and slightly reeled.
Nothing directly—this verse is a battlefield description, emphasizing divine combat imagery rather than cosmology or pralaya doctrine.
Indirectly, it models kṣātra themes—steadfastness under attack and endurance in conflict—values later applied to a king’s duty to remain composed and protect order even when struck by adversity.
No Vāstu or ritual procedure is specified; the key technical element is the weapon-term *parigha* (iron club), used in Purāṇic martial descriptions rather than temple-architecture rules.