Can you detail the transformative power of Sai Baba's touch as described in Chapter 6?

The sixth chapter describes the touch of the Guru's hand as wondrous and profoundly purifying. When Sai Baba places his hand, along with Udi from the Dhuni, upon a devotee's head, their heart is said to overflow with self-bliss. This touch possesses a unique power to burn away the subtle body of ego into ashes, a feat that even the great fire of dissolution cannot accomplish. As mentioned in Chapter 6, by placing his lotus-hand on the head, Sai washes away the accumulated impurities of many births, thereby making his loving devotees pure and leading them toward spiritual realization.