How does Hemadpant use his personal story about Pir Maulana in Chapter 21 to illustrate a broader spiritual principle about divine timing and grace?

In Chapter 21, Hemadpant masterfully uses his own past failure to visit the Siddha Pir Maulana as a powerful lesson. He explains that his avoidance was not just a personal choice but a symptom of 'ill-luck' and a lack of divine grace at that time. By contrasting this past event with his later 'unbreakable bond' with Shirdi, he illustrates the spiritual principle that the company of Saints is only accessible when the time is right and one's fortune allows it. The story serves as proof that divine grace is the essential ingredient, without which such a sacred union is difficult to attain, regardless of physical proximity.