What extraordinary yogic abilities or miracles of Sai Baba are mentioned in the introduction to Chapter 7?

The introductory section of Chapter 7 alludes to some of Sai Baba's extraordinary abilities and practices. It mentions his practice of Khanda-yoga, which involved the disjointing of his own limbs. The text describes how, through these experiments, his hands, feet, and head would sometimes be separated from his body and then joined back together as they were before. This chapter also references other yogic feats like Dhauti, which is a method for cleansing the stomach, and Poti. These practices are highlighted as examples of how he toiled for others and even bore the sufferings of his devotees upon his own body.