Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
आदित्यग्रहणे प्राप्ते पूर्वयामत्रये तथा । नाद्याद्वै यदि भुंजीत सुरापेन समो भवेत् ॥ ५७ ॥
ādityagrahaṇe prāpte pūrvayāmatraye tathā | nādyādvai yadi bhuṃjīta surāpena samo bhavet || 57 ||
日食が起こる時—またその前の三つの時刻(夜警)においても—食してはならない。もし食すれば、酒を飲む者と同等となる。
Narada (teaching dharma/vrata rules in eclipse context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhayanaka
It frames eclipse-time discipline as a strong purification rule: eating during the eclipse window is treated as a grave transgression, pushing the practitioner toward fasting, restraint, and heightened ritual purity.
By prescribing self-restraint during sacred astronomical events, it supports bhakti through niyama (disciplined conduct), making the devotee’s body and mind fit for japa, worship, and remembrance of the Divine during grahaṇa.
Jyotiṣa (Vedāṅga astrology/astronomy) is implied through the timing rule—“pūrva-yāma-traya” and “āditya-grahaṇa”—showing how ritual conduct is scheduled according to eclipse periods.