What is the primary inquiry that begins Chapter 48 of the Sai Satcharitra, and how does the chapter proceed to answer it?

Chapter 48 of the Sai Satcharitra begins with a listener who, filled with respect, starts to wonder whether Shri Sai is a Guru or a Sadguru. To satisfy this inquiry, the chapter sets out to explain the brief characteristics of a Sadguru, allowing the listener to recognize these signs at the feet of Shri Sai Samarth. The chapter then systematically differentiates a true Sadguru from others by first listing what a Sadguru is not—not someone who just teaches scriptures, controls their breath, or has hollow verbal knowledge. It then defines a Sadguru as one who possesses direct self-experience and can impart it, is free from ego, and has boundless, selfless love for the disciple, as detailed throughout Chapter 48.