Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
जयचक्रं प्रवक्ष्यामि आदिहान्तांश्च वै लिखेत् ।रेखास्त्रयोदशाऽऽलिख्य षड्रेखास्तिर्यगालिखेत् ॥ १३ ॥
In the full Agni Purana this is chapter 131, verse 13.
I will tell the Jaya chakra. Write the letters from a to ha. Draw thirteen lines. Then draw six lines across.
Simple meaning: A victory wheel is drawn with thirteen lines and six lines across. The letters from a to ha are written in it.
दिग्ग्रहा मुनयः सूर्या ऋत्विग्रुद्रस्तिथिः क्रमात् ।
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.