Matsya Purana — Dynastic Genealogies: Paurava–Anu Lines
तस्य भ्राता पितृव्यो यश् चकार भरणं तदा तस्मिन्निवसतस्तस्य यदृच्छातस्तु वै वृषः //
tasya bhrātā pitṛvyo yaś cakāra bharaṇaṃ tadā tasminnivasatastasya yadṛcchātastu vai vṛṣaḥ //
Then his paternal uncle—the brother of his father—undertook his maintenance and support. And while he was living there, a bull happened to come there of its own accord.
This verse does not discuss Pralaya; it belongs to a genealogical/biographical narrative focused on family support and a subsequent event marked by the arrival of a bull.
It highlights the dharmic duty of kinship: a paternal uncle assumes responsibility for a dependent relative’s upkeep (bharaṇa), reflecting the householder ideal of maintaining and protecting family members.
No explicit Vastu or ritual instruction appears here; however, the bull’s unexpected arrival can function narratively as an auspicious sign (vṛṣa often connotes dharma and prosperity) that may foreshadow a significant turn in the story.