Matsya Purana — The Syamantaka Jewel Episode and the Vrishni–Sainya Genealogies
धर्मभृद्धर्मवर्माणौ धृष्टमानस्तथैव च सर्वे च प्रतिहोतारो रत्नायां जज्ञिरे च ते //
dharmabhṛddharmavarmāṇau dhṛṣṭamānastathaiva ca sarve ca pratihotāro ratnāyāṃ jajñire ca te //
Dharmabhṛt, Dharmavarmā, and likewise Dhṛṣṭamāna—together with all those known as the Pratihotāras—were born from Ratnā.
This verse is not about Pralaya; it belongs to a genealogical register, recording births in a particular lineage through Ratnā.
Indirectly, it reflects the Purāṇic emphasis on lineage and continuity—key supports for royal legitimacy and the householder’s duty to sustain family lines through righteous conduct.
No Vāstu or temple rule is stated; the term “Pratihotāra” is a lineage label with a ritual-tinged etymology (connected to priestly functions), but the verse itself is purely genealogical.