What extraordinary yogic practices did Sai Baba perform that involved his physical body, as mentioned in Chapter 7?

According to Chapter 7, Sai Baba engaged in astonishing practices that demonstrated his complete mastery over his physical form. These included Khanda-yoga, which is described as the disjointing of his limbs. The text mentions that sometimes his hands, feet, and head were separated, and then he would join them back together as before. This chapter also alludes to other experiments he conducted on his body, such as Dhauti (a cleansing of the stomach) and Poti, highlighting how he toiled and even wore out his own body for the benefit of others.