What was the purpose of Sai Baba's manifestation in Shirdi, and how is his physical departure explained?

As detailed in Chapter 43, Sai Baba appeared in Shirdi for the sake of his devotees' protection, gathered by their past merits and devotion. His entire purpose was centered on the welfare of his followers. The text explains that once his task for the devotees was considered over, he 'left the body.' However, this was not a conventional death. It is described as a voluntary act where he merged himself into the unmanifest, burning the body through the fire of Yoga. He transcended the material state to attain his previous unmanifest form, from where he continues to enjoy his true self and keep his devotees awake.