Why did Sai Baba insist that Bapusaheb Jog read the Bible and the Quran as part of his daily parayana?

This question is based on a false premise, as the provided texts do not state that Sai Baba had devotees read the Bible or the Quran. On the contrary, Chapter 18 explicitly mentions that the books read daily were Hindu scriptures. Specifically, it highlights Jnandeva's Bhavartha Deepika (a commentary on the Gita) and the Nath Bhagawat. These are referred to as the two main books, and their reading was an assignment given to Bapusaheb Jog for the spiritual benefit of all devotees. The chapter emphasizes the essence of the Bhagavat religion being central to these daily readings in Shirdi.