Narada Purana — Purva Bhaga, Shloka 37
The Account of the Lalitā Hymn, the Protective Armor
Kavaca), and the Thousand Names (Sahasranāma
सायं प्रातर्जपन्नित्याकवचं सर्वरक्षकम् । कदाचिन्नाशुभं पश्येत्सर्वदानंदमास्थितः ॥ ३७ ॥
sāyaṃ prātarjapannityākavacaṃ sarvarakṣakam | kadācinnāśubhaṃ paśyetsarvadānaṃdamāsthitaḥ || 37 ||
若人恒常于黄昏与黎明诵持此一切护佑之甲（kavaca），终不见不祥；常住喜乐之中，安稳无忧。
Narada (teaching in the Narada Purana dialogue tradition, commonly framed with the Sanatkumara lineage)
Vrata: none
Primary Rasa: shanta (peace)
Secondary Rasa: bhakti (devotion)
FAQs
It presents disciplined daily japa of a kavaca as a dharmic safeguard: steady recitation at the two sandhya times removes inauspicious influences and stabilizes the practitioner in inner bliss.
By emphasizing faithful, regular recitation, it frames protection and joy as fruits of sustained devotional practice—turning remembrance (japa) into a constant refuge that keeps the mind aligned with auspiciousness.
The timing—morning and evening—reflects sandhya-based ritual discipline (kalā/niyama), aligning mantra practice with prescribed daily intervals, a practical application of Vedic ritual timing and procedure.