Skanda Purana — Prabhasa Khanda, Shloka 5
महानदीं प्राप्य दिनं च विष्णोस्तोयांजलिं यस्तुपितॄन्ददाति । श्राद्धं कृतं तेन समाः सहस्रं यच्छन्ति कामान्पितरः सुतृप्ताः
mahānadīṃ prāpya dinaṃ ca viṣṇostoyāṃjaliṃ yastupitṝndadāti | śrāddhaṃ kṛtaṃ tena samāḥ sahasraṃ yacchanti kāmānpitaraḥ sutṛptāḥ
マハーナディーに至り、ヴィシュヌの聖なる日に、ピトリ（祖霊）へ一掬の水（タルパナ）を捧げる者は、その行いによって千年分のシュラーダ（祖霊供養）を成したとみなされる。満ち足りた祖霊は望みの恵みを授ける。
Skanda (deduced from Dvārakā Māhātmya narrative style within Prabhāsa Khaṇḍa)
Tirtha: Mahānadī-tīrtha
Type: river
Scene: At a broad sacred riverbank, a devotee stands facing the water, offering an añjali of water for pitṛs; behind, a small Viṣṇu shrine/flag; above, satisfied ancestors appear serene, granting boons.
FAQs
A tīrtha-based act of Pitṛ-tarpaṇa, done with devotion on a Viṣṇu-sacred day, is magnified into enduring dharma: it pleases the ancestors and returns blessings to the devotee.
The Mahānadī tīrtha associated with Dvārakā in the Prabhāsa Khaṇḍa’s Dvārakā Māhātmya.
Offering a water-oblation (toyāñjali / tarpana) to the Pitṛs at the Mahānadī, which is praised as equivalent to having performed Śrāddha for a thousand years.