How does the story of the doubtful Yogi in Chapter 23 exemplify the chapter's core teaching about Maya and the grace of a Guru?

The story of the Yogi serves as a powerful practical lesson for the philosophical teachings in Chapter 23. The Yogi, despite his learning, is trapped by Maya when he judges Sai Baba by the external act of eating onions, confirming the chapter's point that a saint's true state is beyond such things. His doubt is a manifestation of the deluded mind. Sai Baba's omniscient response demonstrates the Guru's ability to see past the devotee's external actions and address the root of their inner delusion. This act of grace shatters the Yogi's pride and doubt, showing, as the chapter teaches, that loving devotion and surrender to the Guru is the only way to overcome the calamities caused by Maya.