Matsya Purana — Tārakāsura’s Austerity and Boon; Mobilization for War; Bṛhaspati’s Fourfold P...
वंशक्षयकरा देवाः सर्वेषामेव दानवाः अस्माकं जातिधर्मो वै विरूढं वैरमक्षयम् //
vaṃśakṣayakarā devāḥ sarveṣāmeva dānavāḥ asmākaṃ jātidharmo vai virūḍhaṃ vairamakṣayam //
The Devas are destroyers of our line—so say all the Dānavas. For us, indeed, it is the very law of our birth and kindred: a deep-rooted enmity that does not perish.
It does not describe cosmic dissolution; instead, it speaks of social and dynastic “dissolution” (vaṃśa-kṣaya)—the feared destruction of a lineage due to ongoing Deva–Dānava conflict.
By framing enmity as “jāti-dharma,” the verse shows how inherited clan-hostilities can be treated as obligatory; the broader Purāṇic ethical lens often urges rulers to restrain such inherited vengeance to prevent vaṃśa-kṣaya (loss of heirs, stability, and social order).
No Vāstu-śāstra or ritual procedure is stated in this verse; its focus is political-mythic hostility and the idea of lineage preservation versus destruction.