What is the main question addressed in Chapter 48 of Sai Satcharitra, and how does the chapter begin to answer it?

The central question that initiates the teachings in Chapter 48 is posed by a listener: "Is Shri Sai a Guru or a Sadguru?" To answer this, the chapter sets out to describe the characteristics of a true Sadguru, so the listener can see for themselves that these signs are found at the feet of Shri Sai Samarth. The text begins this explanation by first defining what a Sadguru is not, stating that knowledge of scriptures, breath control, or impressive talks alone do not make one a Sadguru. The chapter emphasizes that a Sadguru must be able to provide direct experience, not just hollow verbal knowledge.