How was the act of receiving Udi from Sai Baba related to a devotee's departure from Shirdi?

As described in Chapter 33, the distribution of Udi played a crucial role for devotees intending to leave Shirdi. It was a well-known practice that devotees had to ask for Sai Baba's permission before returning to their villages. The true signal of his approval was the act of giving them Udi. The chapter explicitly states that when Baba said, "Take the Udi," it was understood that permission to leave was officially granted. This would fill the departing devotee with enthusiasm for their journey home, making the Udi a necessary and cherished parting gift.