Matsya Purana — Genealogy of Kaśyapa: Ādityas
हिरण्यकशिपोर्ये वै भागिनेयास् त्रयोदश व्यंसः कल्पश्च राजेन्द्र नलो वातापिरेव च //
hiraṇyakaśiporye vai bhāgineyās trayodaśa vyaṃsaḥ kalpaśca rājendra nalo vātāpireva ca //
O king, the nephews of Hiraṇyakaśipu were thirteen in number—among them Vyaṃsa, Kalpa, Nala, and Vātāpi.
This verse does not discuss Pralaya; it is a genealogical notice listing relatives (nephews) connected to Hiraṇyakaśipu within the Purana’s lineage framework.
Indirectly, it supports the Purāṇic ideal that a ruler should know lineages and historical precedents (vamśa-smṛti) for governance, diplomacy, and understanding traditional narratives about dharma and adharma.
No Vāstu, iconographic, or ritual procedure is stated in this verse; it functions purely as a dynastic/genealogical enumeration.