Matsya Purana — Vishnu’s Battle with the Daityas: Astra-Combat
असम्भ्रान्तो रणे विष्णुर् अथ जग्राह कार्मुकम् शरांश्चाशीविषाकारांस् तैलधौतानजिह्मगान् //
asambhrānto raṇe viṣṇur atha jagrāha kārmukam śarāṃścāśīviṣākārāṃs tailadhautānajihmagān //
Unperturbed in the battle, Viṣṇu then took up his bow, and also took arrows like venomous serpents—oil-polished and perfectly straight, without any bend.
This verse does not describe pralaya or cosmology; it focuses on Viṣṇu’s calm readiness in battle, emphasizing divine composure and martial preparedness.
It models the kṣatriya ideal of steadiness under pressure: one should act without panic, using well-prepared means (straight, well-kept weapons) when protecting dharma.
No vastu or ritual procedure is stated directly; the practical detail of oil-polished, straight arrows reflects disciplined preparation, a value echoed in ritual and technical disciplines elsewhere in the Matsya Purāṇa.