Matsya Purana — Glory of Tīrtha-Śrāddha: Best Times
अद्यापि पितृतीर्थं तत् सर्वकामफलप्रदम् नीलकुण्डमिति ख्यातं पितृतीर्थं द्विजोत्तमाः //
adyāpi pitṛtīrthaṃ tat sarvakāmaphalapradam nīlakuṇḍamiti khyātaṃ pitṛtīrthaṃ dvijottamāḥ //
Even today, that sacred ford of the Fathers (Pitṛ-tīrtha) bestows the fruit of all desired aims. It is renowned as “Nīlakuṇḍa” (the Blue Pool), O best of the twice-born, as a Pitṛ-tīrtha.
This verse does not discuss pralaya; it focuses on tīrtha-māhātmya—specifically a Pitṛtīrtha said to grant desired results.
For householders, it underscores Pitṛ-kārya (ancestral duty): visiting a Pitṛtīrtha for śrāddha/tarpaṇa is presented as highly efficacious and supportive of dharma and family continuity.
Ritually, the key point is the identification of Nīlakuṇḍa as a Pitṛtīrtha—implying it is a recommended site for ancestral offerings (tarpaṇa/śrāddha) and is praised as granting comprehensive fruits (sarva-kāma-phala).