What does Chapter 13 reveal about the nature of Sai Baba's grace, particularly through the Patil's experience of punishment and subsequent recovery?

Chapter 13 illustrates that Sai Baba's grace can be "inconceivable and unfathomable." The Patil experienced what seemed like punishment in his dreams—being beaten with a cane and having his chest ground by a mortar—which initially made no sense. However, the result was clearly beneficial, as this experience led directly to the destruction of his disease and relief from his sorrow. This shows that Baba's methods, while sometimes appearing harsh or strange, are ultimately compassionate and designed to remove suffering, even if the process isn't immediately understood by the devotee.