Narada Purana — Purva Bhaga, Shloka 30
Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
भूतविद्धेति विख्यातास्रद्भिः शास्त्रविशारदैः । अत्यंतक्षयपक्षे तु परेद्युर्नापराह्णगा ॥ ३० ॥
bhūtaviddheti vikhyātāsradbhiḥ śāstraviśāradaiḥ | atyaṃtakṣayapakṣe tu paredyurnāparāhṇagā || 30 ||
ក្នុងចំណោមអ្នកមានសទ្ធា និងជំនាញក្នុងសាស្ត្រ វាត្រូវបានល្បីថា «ភូតវិទ្ធា»។ ប៉ុន្តែបើមានក្សយខ្លាំងបំផុត នោះគួរអនុវត្តនៅថ្ងៃបន្ទាប់ មិនមែននៅរសៀលនៃថ្ងៃដែលគេគិតថាជាទិថិនោះទេ។
Narada (teaching within a dharma/vrata calendrical discussion)
Vrata: Amāvāsyā timing (bhūtaviddhā case)
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It emphasizes śāstra-based precision in dharma: spiritual merit depends not only on devotion but also on correctly determining the observance time (kāla) when calendrical anomalies like tithi-kṣaya occur.
Bhakti is protected from error by following scriptural timing rules; the verse implies that sincere devotion should be aligned with correct vrata-kāla, especially when the tithi is ‘lost’ and the observance must shift to the next day.
Jyotiṣa/Vedāṅga calendrics (pañcāṅga logic): recognizing tithi-kṣaya and applying the rule that in extreme kṣaya cases the observance is on the next day, not in the aparāhṇa of the nominal day.