Śrāddha-prayoga: Niyama, Brāhmaṇa-parīkṣā, Kutapa-kāla, Tithi-nyāya, and Vaiṣṇava-phala
क्षयाहस्य तिथैर्विप्र यदि दंडमितिर्भवेत् । विद्धापराह्णि कायां तु श्राद्धं कार्यं विजानता ॥ २६ ॥
kṣayāhasya tithairvipra yadi daṃḍamitirbhavet | viddhāparāhṇi kāyāṃ tu śrāddhaṃ kāryaṃ vijānatā || 26 ||
O brāhmaṇa, kung sa araw ng kṣayāha (pagkawala ng tithi) ang mga tithi ay nagtatagal lamang ng sukat na isang daṇḍa, ang nakaaalam ng tuntunin ay dapat magsagawa ng śrāddha sa hapon, sa bahaging viddhā (nagsasapawan).
Sanatkumara (teaching Narada on śrāddha timing rules)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It stresses that ancestral rites (śrāddha) must be aligned with precise sacred time (kāla); correct timing safeguards the rite’s efficacy and honors the pitṛs according to dharma.
Indirectly: by teaching careful, faithful observance of dharmic rites, it cultivates śraddhā (reverent trust) and disciplined devotion—foundational attitudes that support Vishnu-bhakti in the Purāṇic worldview.
Jyotiṣa (Vedāṅga astrology/kalā-nirṇaya): deciding ritual timing using tithi behavior (kṣaya), aparāhṇa (afternoon window), and viddhā (overlap) considerations, including very short ‘daṇḍa’-length tithis.