Matsya Purana — Vishnu’s Battle with Mathana
जघान भिन्दिपालेन शितबाणेन वक्षसि तत्प्रहारमचिन्त्यैव विष्णुस्तस्मिन्महाहवे //
jaghāna bhindipālena śitabāṇena vakṣasi tatprahāramacintyaiva viṣṇustasminmahāhave //
He struck him on the chest with a bhindipāla and with a keen, sharp arrow; yet in that great battle, Viṣṇu—the inconceivable—regarded that blow as nothing.
This verse does not describe pralaya directly; it emphasizes Viṣṇu’s acintya (inconceivable) nature—an attribute that, elsewhere in the Purāṇa, underlies his capacity to uphold and reconstitute the cosmos during dissolution.
Indirectly, it frames the ideal of steadfastness in adversity: just as Viṣṇu remains unaffected by assault, kings are urged in Purāṇic ethics to remain composed and resolute in संकट (crisis) while protecting dharma.
No Vāstu or ritual procedure is stated in this verse; its key takeaway is theological—Viṣṇu’s invulnerability and acintya-śakti—rather than temple architecture or rites.