How does Chapter 6 describe the transformative power of a Sadguru's touch, with specific reference to Sai Baba?

According to Chapter 6, the touch of a Sadguru like Sai Baba is wondrous and profoundly transformative. The chapter explains that when Sai Baba places His blessing hand, along with Udi from the Dhuni, upon a devotee's head, the heart overflows with self-bliss. This sacred touch is described as having the power to accomplish what even the fire of dissolution cannot: it burns the subtle body, or ego, into ashes. Furthermore, the text states that by placing His lotus-hand on the head, Sai washes away the accumulated impurities of many births, rendering His devotees pure. This physical contact is a conduit for immense grace, leading to emotional and spiritual purification.