The text mentions Sai Baba practicing 'Khanda-yoga'. Can you explain what this was and what other similar practices are described?

According to Chapter 7 of the Shri Sai Satcharitra, Sai Baba engaged in extraordinary yogic practices. One such practice was Khanda-yoga, which is described as the disjointing of his own limbs. The text states that sometimes his hands, feet, and head were separated, and then he would join them back together as before. This demonstrated his complete mastery over his physical form. In addition to Khanda-yoga, the chapter also mentions other experiments he performed on his body, such as Dhauti, which is a method for cleansing the stomach, and Poti. These practices highlight how Baba toiled for the benefit of others and even bore the sufferings of his devotees, wearing out his own body in the process.