How does the narrator's personal anecdote about Pir Maulana in Chapter 21 serve to illustrate the broader theological point about the unity of Saints?

In Chapter 21, the narrator's story about refusing to see Pir Maulana in Bandra acts as a powerful illustration for a larger spiritual concept. The personal failure, attributed to "ill-luck," first establishes the principle that divine grace is necessary to meet a Saint. The chapter then pivots from this specific example to the general teaching that all Saints, despite appearing in different times and places, are "essentially inseparable from one another" and "inwardly, they are all one." By linking his missed opportunity with Pir Maulana to his eventual unbreakable bond with Sai Baba in Shirdi, the narrator frames his own journey within this universal context, suggesting that his ultimate connection to a Saint was part of this grand, interconnected spiritual arrangement detailed in Chapter 21.