According to Chapter 23, how does Sai Baba's act of eating onions relate to his teachings on judging saints?

Chapter 23 powerfully illustrates a key teaching through the story of the Yogi who doubted Sai Baba. When the Yogi saw Baba eating what he considered unusual food for a holy man—stale bread and onions—he questioned Baba's sainthood. As the narrative in Chapter 23 explains, Baba's subsequent omniscient remark about digesting onions was a direct lesson to the Yogi and the reader. The chapter explicitly states that one cannot understand a saint's true state by external factors like what they eat, their caste, or their behavior, as their inner state is 'always beyond such things'. Baba's simple meal was a test and a teaching moment, proving that judging spiritual masters by conventional standards is a mistake.