What is the philosophical explanation of Sai Baba's death according to the provided text?

According to Chapter 43, the concept of death as a separation of body and senses does not truly apply to a being like Sai Baba. The text posits that for avatars who incarnate for the welfare of devotees, birth and death are 'false imaginations.' Sai Samarth is described as the Supreme Brahman, for whom there is no birth or death. His departure was a conscious choice; he 'burned the body in the fire of Yoga' and 'merged himself into the unmanifest.' The text likens the death of saints to a solar eclipse, which is merely a 'defect of vision' for the observer. Therefore, his death was not an end but a transition back to his unmanifest state, from where he continues to exist in the hearts of his devotees.