Narada Purana — Purva Bhaga, Shloka 56
Varṇāśrama Saṁskāras, Upanayana Windows, Brahmacārin Ācāra, and Anadhyāya Prohibitions
द्विजैः श्रद्धं चकर्त्तव्यं मन्वादिषु युगादिषु । श्राद्धे निमंत्रिते चैवग्रहणे चंद्रसूर्ययोः ॥ ५६ ॥
dvijaiḥ śraddhaṃ cakarttavyaṃ manvādiṣu yugādiṣu | śrāddhe nimaṃtrite caivagrahaṇe caṃdrasūryayoḥ || 56 ||
二次生者（dvija）应在诸摩奴期（Manvantara）与诸劫（Yuga）之始行施祖祭（śrāddha）；亦当在受邀参加śrāddha之时，以及月食与日食之际如法奉行。
Narada (in instruction/dialogue context with the Sanatkumara tradition)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: karuna
FAQs
It elevates śrāddha as a dharmic duty to be performed at cosmic thresholds (yugādi, manvādi) and powerful liminal moments (grahaṇa), emphasizing faith-based ancestral obligation aligned with sacred time.
While focused on ritual duty, it supports bhakti through śraddhā (faith) and disciplined observance—purifying the practitioner and honoring lineage, which in Purāṇic dharma is a supportive foundation for devotion to the divine.
Jyotiṣa (Vedic astronomy/astrology) is implied through grahaṇa (eclipse) timing and calendrical markers like yugādi/manvādi, showing how ritual performance is coordinated with sacred temporal calculations.