Matsya Purana — Pitṛ Worlds
सुमूर्तिमन्तः पितरो वसिष्ठस्य सुताः स्मृताः नाम्ना तु मानसाः सर्वे सर्वे ते धर्ममूर्तयः //
sumūrtimantaḥ pitaro vasiṣṭhasya sutāḥ smṛtāḥ nāmnā tu mānasāḥ sarve sarve te dharmamūrtayaḥ //
The Pitṛs are remembered as embodied beings of proper and fair form, and as the sons of Vasiṣṭha; by name they are all called the Mānasas, and every one of them is an embodiment of Dharma.
Indirectly, it presents a stable cosmic-ritual order: the Pitṛs (ancestral powers) persist as Dharma-embodiments, supporting continuity of lineage and rites across cycles, rather than describing Pralaya events explicitly.
By identifying the Pitṛs as Dharma-forms, it reinforces that śrāddha and ancestor offerings are not mere customs but dharmic obligations for householders and rulers, sustaining lineage, social order, and merit according to Purāṇic ethics.
Ritually, it supports Pitṛ-yajña/śrāddha: the Pitṛs are worthy recipients because they are ‘Dharma embodied.’ The verse itself does not state Vāstu rules, but it underpins the legitimacy of prescribed ancestral rites often performed in properly consecrated domestic/ritual spaces.