Matsya Purana — Origin of Soma
प्रभा प्रभाकरं त्यक्त्वा हविष्मन्तं कुहूः स्वयम् कीर्तिर्जयन्तं भर्तारं वसुर्मारीचकश्यपम् //
prabhā prabhākaraṃ tyaktvā haviṣmantaṃ kuhūḥ svayam kīrtirjayantaṃ bhartāraṃ vasurmārīcakaśyapam //
Prabhā, having left Prabhākara, took Haviṣmant as her husband; and Kuhū chose him of her own accord. Kīrti had Jayanta for her spouse; and Vasu had Mārīca-Kaśyapa.
This verse is genealogical rather than cosmological; it records marital affiliations and lineage markers, not events of Pralaya or creation.
Indirectly, it reflects the Purāṇic emphasis on lineage, lawful marriage, and social continuity—key concerns for householders and for kings who uphold dynastic legitimacy.
No Vāstu/temple-building or ritual procedure is specified here; the focus is on names and marital connections within a lineage framework.