Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
+आत्मनाशश्चतुर्थस्तु पञ्चमो मृत्युदायकः ।स्थानमेवार्थलाभाय मित्रभृत्यादिबान्धवाः ॥ ७ ॥
In the full Agni Purana this is chapter 132, verse 7.
The fourth is the ruin of the self. The fifth gives death. A place in the chakra itself leads to gain of wealth, and so do friends, servants and relatives.
Simple meaning: The fourth brings ruin and the fifth brings death. Places in the wheel can lead to wealth, friends and relatives.
सिद्धः साध्यः सुसिद्धश्च सर्वे ते फलदायकाः ।
Siddha, Sadhya and Susiddha give results. Avoid Ari and Mrityu in all work.
अकारान्तं यथा प्रोक्तम इ उ ए विदुस्तथा ।
The rows of the other vowels work like the first. Next come the eight letter groups.
देवा अकारवर्गे तु दैत्याः कवर्गमाश्रिताः ।
Each group of letters belongs to a kind of being: gods, Daityas, Nagas and Gandharvas.