Matsya Purana — The Slaying of Tāraka: Skanda’s Śakti and the Victory of the Devas
इत्युक्त्वा च ततः शक्तिं मुमोच दितिजं प्रति सा कुमारभुजोत्सृष्टा तत्केयूररवानुगा बिभेद दैत्यहृदयं वज्रशैलेन्द्रकर्कशम् //
ityuktvā ca tataḥ śaktiṃ mumoca ditijaṃ prati sā kumārabhujotsṛṣṭā tatkeyūraravānugā bibheda daityahṛdayaṃ vajraśailendrakarkaśam //
Having spoken thus, he then hurled the śakti (spear) toward the son of Diti. Released from Kumāra’s arm, accompanied by the clang of his armlet, it pierced the demon’s heart—hard as a thunderbolt and as rugged as a mountain peak.
This verse does not address pralaya; it depicts a combat episode where a divine spear pierces a demon’s heart, using cosmic-strength similes (vajra, mountain) to convey irresistible force.
Indirectly, it reinforces the Purāṇic ethic that adharma must be checked decisively: the righteous protector (like a king) should act with clarity and strength against destructive forces symbolized by the daitya.
No Vāstu or ritual procedure is specified; the key technical term is śakti (a spear/weapon), relevant mainly to iconography where deities like Skanda are depicted holding the śakti.