What was the motivation for explaining the characteristics of a Sadguru at the beginning of Chapter 48?

The beginning of Chapter 48 explicitly states the reason for its detailed explanation of a Sadguru. A listener, who held great respect for the stories, began to wonder: "Is Shri Sai a Guru or a Sadguru?" To provide satisfaction for this curious listener, the author decided to outline the brief characteristics of a Sadguru. The stated purpose, as mentioned in this chapter, is to demonstrate how the signs of a true Sadguru may be found at the feet of Shri Sai Samarth, thereby addressing the listener's doubt by providing a clear framework for understanding.