Matsya Purana — Vishnu’s Battle with the Daityas: Astra-Combat
जग्राह चक्रं तपनायुताभम् उग्रारमात्मानमिव द्वितीयम् चिक्षेप सेनापतये ऽभिसंध्य कण्ठस्थलं वज्रकठोरमुग्रम् //
jagrāha cakraṃ tapanāyutābham ugrāramātmānamiva dvitīyam cikṣepa senāpataye 'bhisaṃdhya kaṇṭhasthalaṃ vajrakaṭhoramugram //
He seized a discus blazing like ten thousand suns—like a second fierce embodiment of himself—and, taking aim at the army-commander, hurled it at his throat, dreadful and hard as a vajra.
This verse is not about pralaya; it is a martial description emphasizing divine-like weapon imagery (a sun-bright cakra) used to strike down an enemy commander.
Indirectly, it reflects the Kṣatriya ideal in Purāṇic ethics: decisive protection of order through disciplined force against hostile leadership (the senāpati), rather than indiscriminate violence.
No Vāstu or ritual procedure is taught here; the key takeaway is iconographic/poetic—cakra described as sun-like radiance, aligning with Purāṇic depictions of Viṣṇu’s discus.