Chapter 48 critiques certain types of spiritual guides. What specific practices or qualities does it argue are insufficient for one to be considered a Sadguru?

Chapter 48 of the Shri Sai Satcharitra carefully enumerates several qualities and practices that, by themselves, are inadequate to qualify someone as a Sadguru. The chapter states that wise people do not confer this title upon those who merely study the Vedas, know the six Shastras, or explain Vedanta. Other practices, such as controlling the breath (Pranayama), wearing heated marks (Taptamudra), or giving mantras from scriptures without any certainty of when the disciple will attain the fruit, are also deemed insufficient. As Chapter 48 emphasizes, vast verbal knowledge without the "taste of experience" is hollow, and only a person who can provide direct, full experience should be called a Sadguru.