Narada Purana — Purva Bhaga, Shloka 59
The Explanation of Sandhyā and Related Daily Observances
Saṅdhyā-ādi Nitya-karma-Vidhi
कृत्वा तु वैदिकीं सन्ध्यां तान्त्रिकीं च समाचरेत् । आचम्य विधिवन्मन्त्री तीर्थान्यावाह्य पूर्ववत् ॥ ५९ ॥
kṛtvā tu vaidikīṃ sandhyāṃ tāntrikīṃ ca samācaret | ācamya vidhivanmantrī tīrthānyāvāhya pūrvavat || 59 ||
ヴェーダのサンディヤー（Sandhyā）を修したのち、しかるべくタントラの作法もまた行うべきである。次いで規定どおりアーチャマナ（ācamana・浄めの水を啜る）をなし、真言に通じた者は先と同じく聖なるティールタ（tīrtha）を招請する。
Sanatkumara (in instruction to Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It teaches ritual sequencing and purity: begin with Vedic Sandhyā, then proceed to the Tantric/āgamic practice, purified by ācamana, and sanctify the rite by invoking tīrthas—making the worship both orthodox and effective.
By emphasizing disciplined preparation—Sandhyā, purification, and sacred invocation—it frames devotion as careful, reverent service (upacāra) where inner intent is supported by correct outward practice.
Ritual procedure (kalpa-prayoga) is foregrounded: the order of rites, ācamana rules, mantra-practitioner conduct, and tirtha-āvāhana as a technical step in worship.