Matsya Purana — Yadu Lineage
एवमुक्ता जयन्ती सा वचः संगृह्य वै पितुः अगच्छद्यत्र घोरं स तप आरभ्य तिष्ठति //
evamuktā jayantī sā vacaḥ saṃgṛhya vai pituḥ agacchadyatra ghoraṃ sa tapa ārabhya tiṣṭhati //
Thus addressed, Jayantī—having taken to heart her father’s words—went to the place where he was standing, having begun a fierce austerity (tapas).
This verse does not discuss Pralaya; it highlights personal discipline—Jayantī following her father’s instruction and approaching the site of severe tapas.
It reinforces dharmic conduct through obedience to rightful guidance (pitr-vākya) and purposeful self-restraint—values applicable to householders and rulers alike when pursuing ethical aims.
No explicit Vāstu or temple-building rule appears here; the ritual takeaway is the emphasis on beginning and maintaining ghora-tapas (intense austerity) as a recognized Purāṇic spiritual practice.