Matsya Purana — Paurava Genealogy: Bharata
दौष्यन्तीं प्रति राजानं वागूचे चाशरीरिणी माता भस्त्रा पितुः पुत्रो येन जातः स एव सः //
dauṣyantīṃ prati rājānaṃ vāgūce cāśarīriṇī mātā bhastrā pituḥ putro yena jātaḥ sa eva saḥ //
To King Duṣyanta, a bodiless voice then spoke: “The mother is like a bellows; the father is the true begetter—he from whom the son is born, he alone is (the real) father.”
This verse does not address Pralaya; it focuses on lineage logic—affirming paternity and thus the legitimacy of succession in a royal-genealogical context.
By stressing clear paternity and rightful descent, it supports the king’s duty to uphold lawful succession and social order (dharma) through recognized lineage and inheritance.
No Vastu or temple-ritual rule is stated here; the key takeaway is a metaphorical doctrine about procreation and lineage rather than architectural prescription.