According to Chapter 6, what is the role and significance of a Sadguru, specifically in relation to Sai Baba?

Chapter 6 of the Sai Satcharitra beautifully illustrates the profound significance of the Sadguru, identifying Sai Baba as the quintessential embodiment of this principle. The text states that a boat with a Sadguru as its helmsman is guaranteed to reach its destination, whether in spiritual or worldly matters. Just uttering the word 'Sadguru' brings Sai Baba to mind, who then places his blessing hand on the devotee's head. This touch is described as wondrous, capable of burning away the ego and washing away the accumulated impurities of many births, making His devotees pure. The chapter emphasizes that the Sadguru awakens the sense of 'I am He' (Soham), dissolving the ego and manifesting the harmony of non-duality.