Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
कोष्ठकाः पञ्चत्रिंशच्च तेषु वर्णान्समालिखेत् ।स्वरान्पञ्च समुद्धृत्य स्पर्शान्पश्चात्समालिखेत् ॥ ३ ॥
In the full Agni Purana this is chapter 132, verse 3.
There are thirty-five squares. Write the letters in them. Take five vowels first, then write the consonants after them.
Simple meaning: The wheel has thirty-five squares. Five vowels and then the consonants are written in them.
ककारादिहकारान्तान्हीनाङ्गांस्त्रीन्विवर्जयेत् ।
Three imperfect letters are left out. The five classes are named Siddha, Sadhya, Susiddha, Ari and Mrityu.
+अरिर्मृत्युश्च द्वावेतौ वर्जयेत्सर्वकर्मसु ।
Avoid the Ari and Mrityu classes in all work. Check carefully which class the name falls in.
आत्मपक्षे स्थिताः सत्त्वाः सर्वे ते शुभदायकाः ।
The beings on your own side give good results. The second supports you and the third gives wealth.