What role does the dissolution of ego play in becoming a devotee of Sai Baba, as shown in the story of Dharamsee and the grapes?

The story of Boss Dharamsee in Chapter 35 highlights that the dissolution of ego is a critical step in becoming a devotee. Dharamsee arrived with "clinical scrutiny," questioning Baba's sainthood based on his personal preference for seedless grapes. This attitude stemmed from his ego. Sai Baba directly challenged this by giving him the very grapes he disliked. The miracle occurred when Dharamsee, despite his internal struggle, surrendered and obeyed Baba's command to "Eat them up." Upon discovering the grapes were seedless, his state of mind was "stunned," and as the text states, "All his ego dropped away, and love for the saint was born." This shows that becoming egoless and rolling at the Guru's feet is the path to enjoying the "festival of happiness" and developing genuine devotion.