How does Chapter 6 describe the power and effect of a Sadguru's blessing hand?

According to Chapter 6 of the Shri Sai Satcharitra, the power of a Sadguru's hand is wondrous and transformative. When Sai Baba places His blessing hand on a devotee's head, especially when accompanied by the Udi, the heart overflows with self-bliss. This sacred touch is said to burn away the subtle body or ego, something not even the fire of dissolution can destroy. The chapter further explains that by placing His lotus-hand on the head, the accumulated impurities from many past births are washed away, making Sai's devotees pure and granting stability to wandering, nonsensical thoughts.