What does Chapter 48 say about who should be called a Sadguru?

Chapter 48 provides a clear definition for who should be considered a Sadguru. It begins by stating that the listener's question, "Is Shri Sai a Guru or a Sadguru?" prompted this explanation. The chapter concludes that only a person who possesses both complete verbal knowledge and is also a giver of direct, full experience has the authority to enlighten disciples and should be called a Sadguru. The text strongly warns that anyone who lacks direct experience themselves should never be called a Sadguru, as they have nothing of substance to offer a disciple.