Matsya Purana — The Syamantaka Jewel Episode and the Vrishni–Sainya Genealogies
वृषभः काशिराजस्य सुतां भार्यामविन्दत जयन्तस्तु जयन्त्यां तु पुत्रः समभवच्छुभः //
vṛṣabhaḥ kāśirājasya sutāṃ bhāryāmavindata jayantastu jayantyāṃ tu putraḥ samabhavacchubhaḥ //
Vṛṣabha took as his wife the daughter of the king of Kāśī. And to Jayanta, by Jayantī, a noble and auspicious son was born.
This verse does not address Pralaya; it is a lineage note describing marriage alliance and the birth of an heir within a royal genealogy.
It reflects the Purāṇic ideal of dynastic continuity through lawful marriage and progeny—key responsibilities of kings and householders for preserving social order and succession.
No Vāstu, temple-building, or ritual procedure is stated here; the verse is purely genealogical, focusing on marital alliance and birth.