How did Sai Baba depart from his physical form, and what is his current state of being?

The narrative in Chapter 43 explains that Sai Baba's departure was a conscious act of a master Yogi. It states that Sai Samarth could die at will and that he chose to burn his body in the 'fire of Yoga.' Following this, he merged himself into the unmanifest, which is described as his previous, true state. His current state is one of being one with Brahman, transcending the material form he once inhabited. Although he left his body in Shirdi, he now fills the entire world in his true form and resides in the hearts of his devotees, continuing to enjoy his true self while keeping his followers spiritually awake and protected.