How was the act of receiving Udi from Sai Baba related to a devotee's departure from Shirdi, based on the account in Chapter 33?

According to Chapter 33 of the Shri Sai Satcharita, the giving of Udi by Sai Baba held a special significance for devotees intending to leave Shirdi. The text explicitly states that when devotees asked for Baba's permission to return to their villages, the practice of giving Udi was a well-known custom. In fact, the chapter emphasizes that when Baba said, 'Take the Udi,' it was understood as the true granting of permission to depart. This act would fill the devotees' minds with enthusiasm for their journey home. This practice demonstrates how a simple act was imbued with Baba's grace and served as a formal, yet compassionate, way of managing the comings and goings of his followers.