Matsya Purana — Lineage of the Pitṛs
मूर्तिमन्तो ऽथ चत्वारः सर्वेषाममितौजसः अमूर्तयः पितृगणा वैराजस्य प्रजापतेः //
mūrtimanto 'tha catvāraḥ sarveṣāmamitaujasaḥ amūrtayaḥ pitṛgaṇā vairājasya prajāpateḥ //
Then there were four embodied (manifest) ones, all of immeasurable splendor; and there were also the formless hosts of the Pitṛs, belonging to Vairāja, the Prajāpati (lord of progeny).
It describes a creation-side classification: Pitṛ hosts associated with Vairāja Prajāpati, including both embodied and formless categories—pointing to how beings are differentiated by form during cosmic manifestation rather than describing dissolution.
By highlighting the Pitṛs (ancestral fathers), it implicitly supports the householder’s and king’s duty to uphold lineage rites—especially śrāddha and offerings to Pitṛs—since Pitṛ-gaṇas are treated as real cosmological recipients within the Purāṇic order.
Ritually, it foregrounds Pitṛ worship: the verse underpins the legitimacy of Pitṛ-oriented rites (e.g., śrāddha/ancestral offerings). It does not state a Vāstu or temple-building rule directly, but it supports the ritual framework often performed in dedicated domestic/ritual spaces.