Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
दिग्ग्रहा मुनयः सूर्या ऋत्विग्रुद्रस्तिथिः क्रमात् ।मूर्छनास्मृतिवेदर्क्षजिना अकडमा ह्यधः ॥ १४ ॥
In the full Agni Purana this is chapter 131, verse 14.
The numbers, in order, are: directions 10, planets 9, sages 7, Suns 12, priests 16, Rudras 11, tithis (moon days) 15. Then murchanas (musical scales) 21, smriti books (law books) 18, Vedas 4, stars 27, Jinas 24. The letters a, ka, da, ma go below.
Simple meaning: Twelve numbers are set at the top of the wheel's columns, and letter rows go below them.
आदित्याद्याः सप्तकृते नामान्ते बलिनो ग्रहाः ।
Divide the name total by seven to find a planet. Sun, Saturn and Mars bring victory. Gentle planets bring peace.
रेखा द्वादश चोद्धृत्य षट्च याम्यास्तथोत्तराः ।
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.