How does Chapter 6 of the Satcharitra explain the power of a Sadguru's touch, particularly Sai Baba's?

Chapter 6 of the Shri Sai Satcharitra vividly describes the immense power of a Sadguru's touch. It states that when Sai Baba, the Sadguru, places His hand on a devotee's head, it is a wondrous event. This simple touch, often accompanied by Udi from the Dhuni, can burn away the subtle body of ego into ashes, something that even the fire of dissolution cannot accomplish. As detailed in Chapter 6, this blessing hand also has the power to wash away the accumulated impurities of many past births, making Sai's devotees pure. The chapter explains that this touch fills the heart with self-bliss and causes love to pour from the eyes, illustrating the profound transformative effect of the Guru's physical blessing.