The Meccan Revelations: Page 58 from Volume One

Know, may God help us and you, that the letters are a nation of nations who are addressed and appointed, and among them are messengers of their kind, and they have names from where they are, and only the people of revelation from our path know this, and the world of letters is the most eloquent in the world and the clearest in elucidation, and they are divided into divisions like the divisions of the world known in custom. Among them is the scholar of power according to Abu Talib al-Makki. We call it the world of greatness, which is the ha and the hamza. Among them is the highest world, which is the world of the kingdom, which is the ha, the kha, the ayn, and the ghayn. Among them is the middle world, which is the world of power, according to us and to most of our companions, and it is the ta, tha, ji, dal, dha, ra, za, dha, kaf, lam, nun, sad, dha, qaf, syin, shen, and the correct yā, and among them is the lower world. It is the world of kingship and martyrdom, which is the correct b