Śrāddha’s Cosmic Reach and Kāla-Nirṇaya (Sacred Timings): Amāvāsyā, Nakṣatra-Yoga, Tīrtha, and Minimum Offerings
नवस्व् ऋक्षेष्व् अमावास्या यदैतेष्व् अवनीपते तदा तृप्तिप्रदं श्राद्धं पितॄणां शृणु चापरम्
navasv ṛkṣeṣv amāvāsyā yadaiteṣv avanīpate tadā tṛptipradaṃ śrāddhaṃ pitṝṇāṃ śṛṇu cāparam
હે રાજા, જ્યારે અમાવાસ્યા આ નવ નક્ષત્રોમાં આવે, ત્યારે કરાયેલું શ્રાદ્ધ પિતૃઓને વિશેષ તૃપ્તિ આપનારું બને છે; આગળ પણ સાંભળો।
Sage Parāśara (in instruction to Maitreyā; addressing a kingly addressee within the teaching style)
This verse states that when Amāvāsyā coincides with certain nine nakṣatras, śrāddha performed then becomes especially satisfying (tṛptiprada) for the Pitṛs.
Parāśara frames śrāddha as a dharmic act whose efficacy depends on sacred time—here, the alignment of tithi (Amāvāsyā) with particular nakṣatras—then proceeds to give further rules and details.
Even when Vishnu is not named directly, the Purana presents dharma and cosmic timing as part of the ordered universe sustained by the Supreme Reality (Vishnu); correct rites harmonize human duty with that divine order.