The text mentions that a Guru can "strike a nail over the lines of destiny." What does Chapter 10 explain about Sai Baba's ability to alter a devotee's fate?

Chapter 10 teaches that by placing complete faith in the feet of the Sadguru, like Sai Baba, one's fate can be fundamentally changed. The text uses the powerful metaphor that the Guru "strikes a nail over the lines of destiny." This implies that the pure service of the Sadguru is so potent that it can completely destroy the worldly existence (Samsara) and help devotees cross over the three types of miseries. As Chapter 10 explains, by trusting the Guru as one would a boatman to cross an ocean, devotees can receive the attainment of liberation, or Moksha, effortlessly.