Narada Purana — Purva Bhaga, Shloka 39
Gṛhastha-praveśa: Vivāha-bheda, Ācāra-śauca, Śrāddha-kāla, and Vaiṣṇava-lakṣaṇa
उपसनं च होतव्यं सायं प्रातर्द्विजातिभिः । उपासनपरित्यागी सुरापीत्युच्यते बुधैः ॥ ३९ ॥
upasanaṃ ca hotavyaṃ sāyaṃ prātardvijātibhiḥ | upāsanaparityāgī surāpītyucyate budhaiḥ || 39 ||
二度生まれの者（ドヴィジャ）は、朝と夕に必ずサンディヤー・ウパーサナー（定時の礼拝）を修すべきである。日々の礼拝を捨てる者は、賢者により酒飲みと同等と説かれる。
Narada (teaching in the Narada Purana dialogue tradition)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhayanaka
FAQs
It stresses that sandhyā-upāsanā (daily morning and evening worship) is a non-optional nitya-karma for dvijas; neglecting it is treated as a grave lapse that erodes spiritual purity and dharmic standing.
By insisting on regular upāsanā, it frames bhakti as disciplined daily remembrance and worship—devotion expressed through consistent practice rather than occasional sentiment.
Ritual timing and daily observance are emphasized—knowledge aligned with Kalpa (procedure of rites) and traditional sandhyā practice (proper morning/evening performance).