What were the extraordinary yogic practices of Sai Baba mentioned in the Satcharitra?

The introduction to Chapter 7 briefly describes some of Sai Baba's remarkable yogic abilities. It mentions his practice of Khanda-yoga, which is described as the disjointing of his limbs, performed along with Samadhi. The text further elaborates on experiments like Dhauti (cleansing of the stomach) and Poti. During these practices, it is stated that his hands, feet, and head were sometimes separated and then joined back together as before. Chapter 7 presents these as examples of how he toiled for others and even bore the sufferings of his devotees.