For a devotee leaving Shirdi, what dual significance did receiving Udi from Sai Baba hold, as mentioned in Chapter 33?

As described in Chapter 33, receiving Udi from Sai Baba upon departure from Shirdi held both a practical and a spiritual significance for a devotee. The chapter explicitly states that the practice of giving Udi to those leaving was well-known to all. When a devotee asked for permission to return to their village, it was Baba's act of giving the Udi that signified true and final permission had been granted. This gesture would fill the departing devotee with enthusiasm for their journey. Beyond this practical function of granting leave, the Udi also carried the deeper spiritual reminder of life's impermanence and the ultimate reality of Brahman, ensuring the devotee left with not just a physical token but a profound teaching as well.