Narada Purana — Purva Bhaga, Shloka 15
The Description of the Four Durgā Mantras
बाह्यावरणमारभ्य पूजयेत्प्रतिलोमतः । भूपुरे बाह्यभागेषु वज्रादीनि प्रपूजयेत् ॥ १५ ॥
bāhyāvaraṇamārabhya pūjayetpratilomataḥ | bhūpure bāhyabhāgeṣu vajrādīni prapūjayet || 15 ||
外の結界（āvaraṇa）から始め、供養は逆次第に（内へ向かって）行うべきである。さらにbhūpura（曼荼羅の方形境界）の外側の区画では、金剛（Vajra）および他の護りの標章・尊格をとりわけ供養せよ。
Sanatkumara (in instruction to Narada on technical ritual procedure)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: vira
FAQs
It teaches that sacred worship is structured: protection and purification are established first at the outer boundary (bhūpura) before moving inward toward the central deity, ensuring a guarded and orderly approach to the divine presence.
Bhakti here is expressed as disciplined reverence—approaching the Lord through prescribed layers of worship, honoring protective powers (like Vajra) and the mandala’s boundaries so devotion becomes focused, stable, and ritually complete.
It highlights applied ritual-technology: the concept of āvaraṇas (enclosures), the bhūpura as a mandala component, and the correct sequencing of pūjā (pratiloma order) used in technical worship systems.