What were the main holy books that Baba had his devotees read, and why were they significant?

The primary sacred texts that Sai Baba encouraged his devotees to read were the Bhagavad Gita and the Bhagavat. As mentioned in Chapter 18, the specific versions read were the Jnaneshwari, a famous commentary on the Gita also known as Bhavartha Deepika, and the eleventh Skandha of the Bhagavat, which is referred to as Nath Bhagawat. These books were considered the essence of the Bhagavat religion. Their significance was elevated by Baba's method of teaching; he would assign Bapusaheb Jog to read them daily and then miraculously connect his own spoken stories to the passages being read, proving to devotees that his grace and wisdom were in perfect alignment with the holy scriptures.