The Exposition of the Krishna Mantra (Kṛṣṇa-mantra-prakāśa): Nyāsa, Dhyāna, Worship, Yantra, and Prayoga
भूबिंबं च लिखेद्बाह्ये श्रीमायादिग्विदिक्ष्वपि । भूग्रहं चतुरस्रं स्यादष्टवज्रविभूषितम् ॥ १९१ ॥
bhūbiṃbaṃ ca likhedbāhye śrīmāyādigvidikṣvapi | bhūgrahaṃ caturasraṃ syādaṣṭavajravibhūṣitam || 191 ||
Ở phía ngoài, nên vẽ đĩa Địa (bhū-bimba); và ở các phương cùng các phương phụ, bắt đầu từ Śrī và Māyā. Đồ hình đất bao quanh phải là hình vuông, trang nghiêm bằng tám biểu tượng vajra.
Sanatkumara (in instruction to Narada, within Vedanga/ritual-technical teaching)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It sanctifies the worship-space by prescribing a cosmic layout: the earth-disc and square enclosure symbolize stability and order, while the eight vajras indicate protective power at the eight directional points.
Bhakti here is expressed through precise upacāra (ritual service): drawing the sacred diagram correctly becomes an act of reverent offering, preparing a pure field for deity-invocation and focused devotion.
It reflects applied ritual-technical knowledge—directional orientation (dik/vidik), measured geometric construction (square enclosure), and symbolic iconography (aṣṭa-vajra), used for accurate worship procedures.