Matsya Purana — Lineage of the Pitṛs
*मत्स्य उवाच हन्त ते कथयिष्यामि पितॄणां वंशमुत्तमम् स्वर्गे पितृगणाः सप्त त्रयस्तेषाममूर्तयः //
*matsya uvāca hanta te kathayiṣyāmi pitṝṇāṃ vaṃśamuttamam svarge pitṛgaṇāḥ sapta trayasteṣāmamūrtayaḥ //
Matsya said: “Come, I shall tell you the excellent lineage and orders of the Pitṛs (ancestral fathers). In heaven there are seven groups of Pitṛs; among them, three are formless (without embodied shape).”
It does not directly describe Pralaya; it shifts to post-death cosmology by outlining the heavenly organization of the Pitṛs, implying an ordered afterlife framework that persists across cosmic cycles.
By defining the Pitṛs and their orders, it supports the householder’s duty of śrāddha and ancestral offerings; kings too uphold dharma by maintaining rites that sustain lineage and social continuity.
Architecturally none is stated here; ritually, it introduces the Pitṛ taxonomy that underlies śrāddha procedure—offerings are directed with awareness of different Pitṛ orders, including those described as formless.