Narada Purana — Purva Bhaga, Shloka 16
The Exposition of the Saptamī Vow Observed Across Twelve Months
Saptamī-vrata-prakāśana
दिवाकर नमस्तुभ्यं प्रभाकर नमोऽस्तु ते । इति संप्रार्थ्य देवेशं सूर्ये चास्तमुपागते ॥ १६ ॥
divākara namastubhyaṃ prabhākara namo'stu te | iti saṃprārthya deveśaṃ sūrye cāstamupāgate || 16 ||
おお、日を成す者（スーリヤ）よ、汝に礼拝する。おお、光を与える者よ、汝に帰敬する。かくして諸天の主に切に祈り、太陽が没しようとする時、この儀礼（誦持）は成就して終わった。
Narada (narrative voice within the Anukramanika-style summary section; prayer formula quoted)
Vrata: none
Primary Rasa: bhakti
Secondary Rasa: shanta
FAQs
It functions as a concise Surya-stuti: honoring the Sun as the visible source of day and radiance, and marking the completion of prayer as sunset arrives—linking devotion with daily cosmic rhythm.
Bhakti here is expressed through direct namaskara (salutation) and heartfelt supplication (saṃprārthya), showing that devotion can be practiced as simple, sincere praise aligned with daily duties.
It reflects Jyotiṣa-based timing and nitya-karma discipline: prayer is framed around the sun’s movement (sunset), a key marker for Sandhya-related observances and ritual scheduling.