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

As narrated in Chapter 33, the giving of Udi was a clear and established signal for devotees wanting to leave Shirdi. When a devotee asked for Baba's permission to return to their village, the act of him giving them Udi was universally understood as the true granting of that permission. The text explicitly states, "when saying 'Take the Udi,' true permission was granted then." This practice was so well-known that receiving the Udi would fill the departing devotee's mind with enthusiasm for their journey, as it signified Baba's direct blessing and consent for their travel.