Matsya Purana — The Advent of Narasiṃha and Hiraṇyakaśipu’s Weapon-Assault
अस्त्रं ब्रह्मशिरश्चैव सोमास्त्रं शिशिरं तथा कम्पनं शातनं चैव त्वाष्ट्रं चैव सुभैरवम् //
astraṃ brahmaśiraścaiva somāstraṃ śiśiraṃ tathā kampanaṃ śātanaṃ caiva tvāṣṭraṃ caiva subhairavam //
“(There are) the Astra called Brahmaśiras, and also the Soma-astra; likewise the Śiśira (chilling) weapon; the Kampana (trembling) and Śātana (destroying) weapons; and also the Tvāṣṭra weapon, as well as the Subhairava (very-terrifying) weapon.”
This verse does not describe Pralaya directly; it catalogues named astras (divine missiles), reflecting Purāṇic martial–mantric lore rather than cosmological dissolution.
By preserving the traditional names of powerful astras, the text supports the kṣatriya ideal of disciplined power—knowledge of weapons is to be governed by dharma, restraint, and rightful protection rather than aggression.
The primary significance is ritual-mantric: astras are typically invoked/controlled through mantras and disciplined observances; the verse functions as a canonical enumeration rather than a Vāstu or temple-building rule.