Matsya Purana — Glory of Prayaga: The Fruit of the Anashaka Fast and the Merit of the Yamuna
एवं ज्ञानेन सम्पूर्णः सदा भवति भोगवान् तारिताः पितरस्तेन नरकात्प्रपितामहाः //
evaṃ jñānena sampūrṇaḥ sadā bhavati bhogavān tāritāḥ pitarastena narakātprapitāmahāḥ //
Thus, one perfected by this knowledge ever becomes a true enjoyer of life; by him the Fathers (Pitṛs)—indeed even the great-grandfathers—are delivered from hell.
This verse is not about cosmic creation or pralaya; it teaches a karmic-ethical result: sacred knowledge grants personal well-being and also uplifts one’s ancestral line from suffering states such as Naraka.
It supports the householder/kingly ideal that learning and right understanding are not merely personal virtues: they generate merit that benefits the family lineage, aligning with Pitṛ-related duties (ancestral responsibility) upheld in Purāṇic dharma.
No Vāstu or iconographic rule is stated here; the ritual takeaway is Pitṛ-benefit—knowledge (and the dharmic life grounded in it) is presented as a means of ancestral deliverance.