In Chapter 23, what specifically caused the visiting Yogi to doubt Sai Baba, and how did Baba resolve this doubt?

The Yogi's doubt, as detailed in Chapter 23, was triggered by a simple observation. Having come to Baba to receive grace for achieving Samadhi, his expectations were high. However, he saw Baba eating what he perceived as a spiritually impure meal: bread (bhakar) with onions. This sight immediately caused a 'strong misgiving' to arise in his mind, making him question how such a person could possibly resolve his profound spiritual doubts. Sai Baba, being omniscient, resolved this instantly. He looked at the Yogi's companion and said that only one with the 'strength to digest it may eat onion freely.' Hearing his un-spoken thought addressed so directly and profoundly, the Yogi was startled into a state of surrender. As Chapter 23 narrates, this event dispelled his doubt, and with a now-clear heart, he received Baba's teachings and blessings.