Can you describe the ritual Baba followed when giving Udi and what its significance was?

As detailed in Chapter 33, Sai Baba had a specific and loving ritual for distributing Udi. He would take handfuls of ash from the Dhuni, which burned constantly day and night in the Masjid. Baba would give this ash, which he referred to as Prasad, to all devotees as a benediction when they were departing. The process was intimate and personal; he would apply the Udi to their foreheads with his own thumb and then place his entire hand on their heads, a powerful gesture of blessing intended for the welfare of his devotees. This daily, unobstructed distribution of Udi served as a tangible blessing and a direct teaching on the impermanence of the physical form.