Skanda Purana — Prabhasa Khanda, Shloka 2
विधिना तत्र यः स्नाति तर्पयेत्पितृदेवताः । प्रतिग्रहकृताद्दोषान्न भयं तस्य विद्यते
vidhinā tatra yaḥ snāti tarpayetpitṛdevatāḥ | pratigrahakṛtāddoṣānna bhayaṃ tasya vidyate
凡于彼处依仪轨沐浴者，当以供水等作“塔尔帕那”（tarpana）以慰悦祖灵（Pitṛ）与诸天；由不当受施而生之过失，对其亦无所怖畏。
Śiva (Īśvara) (contextual continuation)
Tirtha: Mahodaya
Type: tirtha
Listener: null
Scene: At a ghāṭa, a pilgrim performs tarpaṇa: water poured through the fingers with kuśa grass, facing the appropriate direction; subtle presence of Pitṛs and devas receiving offerings; the tīrtha water glows, signifying removal of pratigraha-doṣa and granting fearlessness.
FAQs
Right practice (vidhi) at a tīrtha—joined with honoring ancestors and gods—functions as moral-ritual purification from social-religious faults.
Mahodaya tīrtha in Prabhāsakṣetra.
Snāna at the tīrtha according to vidhi, along with pitṛ-tarpaṇa and deva-tarpaṇa.