Borges comment about the Qurʾān and related

The renowned South American writer, Borges , gave a series of conferences on diverse topics called *Siete Noches* (Seven nights), where we can read/hear the following (among many other scattered comments on the subject). > For the ulema, the doctors of Muslim law, the Qurʾān is not a book like the others. It is a book ―this is incredible, but this is how it is― previous to the Arabic language, so one may not study it historically or philologically, because it is previous to the Arabs, previous to its/their language, and previous to the universe. Nor even do they admit that the Qurʾān be a work of God; it is something more intimate and mysterious. The Qurʾān, for the orthodox Muslims, is an attribute of God, like His rage, His mercy, or His justice. The Qurʾān itself speaks of a mysterious book, the mother of the book, the celestial archetype of the Qurʾān. It is in heaven and is worshiped by the angels. (my own literal translation). I am interested in the second part of the paragraph where he says that the Qurʾān is considered an attribute of God. Does that exist in any school of Islamic mysticism? If so, which ones and what else has been said along those lines.