Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
ग्राह्या स्यादपराह्णस्था कुहूः पैतृककर्मणि । यथार्वाचीनवृद्धौ तु संत्याज्या भूतसंयुताः ॥ ३३ ॥
grāhyā syādaparāhṇasthā kuhūḥ paitṛkakarmaṇi | yathārvācīnavṛddhau tu saṃtyājyā bhūtasaṃyutāḥ || 33 ||
പൈതൃകകർമ്മത്തിൽ കുഹൂ തിഥി അപരാഹ്ണത്തിൽ വന്നാൽ ഗ്രഹണീയമാണ്. എന്നാൽ ആർവാചീന-വൃദ്ധി (സമീപകാലത്ത് മരിച്ചവർക്കുള്ള) കാര്യത്തിൽ ഭൂതസംയുത (അശുഭസ്പർശിത) തിഥികൾ ഒഴിവാക്കണം.
Narada (teaching in a dharma/kalpa-style instruction context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It teaches that ancestral offerings gain efficacy when performed in the proper kāla (time-window) and on ritually suitable tithis; correct timing is treated as a dharmic safeguard for honoring the pitṛs.
While primarily ritual-instructional, it supports bhakti indirectly by stressing disciplined, reverent observance—honoring pitṛs as part of dharmic living that sustains purity and steadiness for devotion to Bhagavān.
Vedāṅga-oriented ritual timing (kalpa) and tithi/kāla discernment (jyotiṣa): Kuhū is acceptable for śrāddha when occurring in aparāhṇa, and certain mixed/inauspicious tithis are to be rejected for recent-death observances.