Matsya Purana — The Slaying of Jambha and the Rise of Tāraka: Divine Battle Formations
शरानग्निकल्पान्ववर्षामराणां ततो बाणमादाय कल्पानलाभम् जघानोरसि क्षिप्रमिन्द्रं सुबाहुं महेन्द्रो व्यकम्पद्रथोपस्थ एव //
śarānagnikalpānvavarṣāmarāṇāṃ tato bāṇamādāya kalpānalābham jaghānorasi kṣipramindraṃ subāhuṃ mahendro vyakampadrathopastha eva //
He showered the immortals with arrows like fire. Then Subāhu, taking up a dart like the blaze of the world-ending fire at the close of a kalpa, swiftly struck Indra upon the chest; and the great Indra trembled, even as he sat upon his chariot-seat.
It uses pralaya imagery metaphorically: the weapon is compared to the kalpānta (end-of-aeon) fire, emphasizing overwhelming, world-ending force rather than describing an actual dissolution event.
Indirectly, it models the Purāṇic ideal of kṣātra-vīrya (martial valor) and the gravity of righteous conflict—power must be wielded decisively and responsibly, since even the greatest ruler (Indra) can be shaken by a single well-aimed strike.
No Vāstu or temple-ritual rule is stated; the only technical register is cosmological-ritual imagery (kalpānta fire) used as a poetic comparator for a weapon’s potency.