Can you summarize the main characteristics of a Sadguru as outlined in Chapter 48 of the Shri Sai Satcharitra?

Chapter 48 of the Shri Sai Satcharitra offers a comprehensive definition of a true Sadguru to satisfy a curious listener. A Sadguru is not merely someone with scriptural knowledge but one who possesses direct, full self-experience and can impart it to others. Key traits include being free from the egoism of superiority, treating all disciples as equals, and viewing the disciple as the Supreme Brahman with fatherly love. Furthermore, as Chapter 48 explains, a Sadguru does not seek service or livelihood from the disciple but is willing to sacrifice for them. Their presence is a "storehouse of supreme peace," marked by humility and an absence of pride in their scholarship.