According to Chapter 18, what was Baba's commentary on the Quran?

The provided sections of Chapter 18 do not contain any commentary from Sai Baba regarding the Quran. The chapter explicitly discusses Baba's deep reverence for and promotion of specific Hindu scriptures, namely the Nath Bhagawat, the Jnaneshwari (also called Bhavartha Deepika), and the Bhagavad Gita. The narrative emphasizes how Baba would have these books read daily in Shirdi for the benefit of his devotees, but it does not mention the Quran or any other religious text.