Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
अकारोऽव्यक्त उत्पन्नो भोगमोक्षप्रदः परः ।अकार ऐश्वरे भूमिर्निवृत्तिश्च कला स्मृता ॥ १० ॥
In the full Agni Purana this is chapter 124, verse 10.
The letter a arose, unseen. It is beyond, and gives enjoyment and liberation. In a, the lordly place, there is earth, and the part called Nivritti is remembered.
Simple meaning: The letter a is unseen and beyond, and gives enjoyment and liberation. It holds earth and the part called Nivritti.
गन्धो न बीजः प्राणाख्य इडा शक्तिः स्थिरा स्मृता ।
The vowels a and i are matched with senses, seed letters, breaths, and the left and right breath.
क्रूरा शक्तिरीबीजः स्याद्धरवीजोऽग्निरूपवान् ।
Powers and seed letters are named, including cruel Shakti and a fire-like seed.
ए शान्तिर्वार्युपस्पर्शो यश्चोदानश्चला क्रिया ।
The vowel e goes with air and touch. Om goes with space and sound.