Chapter 7 mentions Sai Baba's practice of Khanda-yoga. Can you explain what this was and what other yogic experiments were noted?

Chapter 7 describes some of Sai Baba's extraordinary spiritual practices, including Khanda-yoga. This practice is detailed as the disjointing of his own limbs, where his hands, feet, and head would be separated from his body and then joined back together as before. The text highlights this as an example of how he toiled for others and even bore their sufferings. Alongside this remarkable feat, the chapter also mentions other experiments he performed, such as Dhauti, which is a method for cleansing the stomach, and Poti. These practices demonstrate his complete mastery over his physical body and his profound yogic abilities.