Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
रेखा द्वादश चोद्धृत्य षट्च याम्यास्तथोत्तराः ।मनुश्चैव तु ऋक्षाणि नेत्रे च रविमण्डलम् ॥ १६ ॥
In the full Agni Purana this is chapter 131, verse 16.
Draw twelve lines up, and six running south and north. The numbers are 14, the stars 27, the eyes 2 and the Sun's circle 12.
Simple meaning: A second wheel is drawn with more lines, and numbers are set at the top of its columns.
तिथयश्च रसा वेदा अग्निः सप्तदशाथ वा ।
More numbers are listed for the columns, and four rows of letters go below them.
एकैकमक्षरं न्यस्त्वा(स्य) शेषाण्येवं क्रमान्न्यसेत् ।
Place the letters in order, add up the name, and divide the total by eight.
वायसान्मण्डलोऽत्युग्रो मण्डलाद्रासभो वरः ।
The remainders are ranked: crow, Mandala, ass, bull, elephant. Each one is stronger than the one before.