If I were seeking a spiritual guide, what warning signs mentioned in Chapter 48 would help me identify someone who is *not* a true Sadguru?

Chapter 48 of the Sai Satcharitra provides several characteristics to help a seeker identify those who are not true Sadgurus. According to the text, you should be cautious of individuals whose authority rests merely on their study of the Vedas, ability to explain Vedanta, or practice of breath control (Pranayama). The chapter also warns against those who simply give out mantras with no certainty of results or please audiences with talks on Brahman but lack deep, personal experience. Such knowledge is described as 'verbally hollow,' and wise people do not recognize these individuals as Sadgurus.