According to Chapter 28, what defines a Sadguru and how does Sai Baba exemplify these qualities?

Chapter 28 explains that a Sadguru is proficient in both Shabda-Brahma (the divine word) and Para-Brahman (the Supreme Being), and Sai Baba is said to have this quality. The chapter emphasizes that a Guru's compassion is superior to a father's; while a father gives birth to a body that will eventually die, the Guru "removes both birth and death." This illustrates the profound and liberating role of a Sadguru. The text also notes that the ability to impart teaching to disciples is a key quality, which Sai Baba possessed, solidifying his status as a true Sadguru.