How does Chapter 6 describe the power and effect of a Sadguru's touch on a devotee?

According to Chapter 6 of the Sai Satcharitra, the touch of a Sadguru's hand is wondrous and transformative. When Sai Baba places His hand, along with Udi from the Dhuni, on a devotee's head, their heart fills with self-bliss and love. This touch is described as being powerful enough to burn away the subtle body or ego, something that even the fire of dissolution cannot achieve. The text further states that this simple act washes away the accumulated impurities of many past births, purifying the devotee and causing their throat to choke with supreme bliss and tears of joy to flow.