Narada Purana — Purva Bhaga, Shloka 84
Nityā-paṭala-prakaraṇa
The Exposition of the Nityā-paṭala
षोडशानां तु नित्यानां प्रत्येक तिथयः क्रमात् । तत्तित्तिथौ तद्भजनं जपहोमादिकं चरेत् ॥ ८४ ॥
ṣoḍaśānāṃ tu nityānāṃ pratyeka tithayaḥ kramāt | tattittithau tadbhajanaṃ japahomādikaṃ caret || 84 ||
十六の常行（ニティヤ）のそれぞれには、順次に対応するティティ（朔望月の日）が定められている。その各ティティにおいて、当該の神格／行法を礼拝し、ジャパ（真言誦持）とホーマ（護摩）などの儀礼を修すべし。
Sanatkumara (in instruction to Narada, within the Vedanga/ritual-technical discourse)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It teaches that spiritual discipline becomes steady when aligned with sacred time (tithi), making worship, mantra-japa, and homa part of an ordered, continuous nitya practice.
By prescribing bhajana on the appropriate tithi, it frames devotion as a regular, time-honored routine—devotional worship supported by japa and sacrificial offerings.
It highlights Vedanga-Kalpa and time-reckoning via the Panchanga—using tithis to schedule rites, and pairing worship with standard ritual limbs like japa and homa.