What is the philosophical understanding of birth and death presented in the scripture, especially in relation to avatars like Sai Baba?

Chapter 43 presents a profound philosophical view where birth is defined as the 'union of body and senses,' and death is their separation. However, for avatars and great souls like Sai Baba, these concepts are considered 'false imaginations.' The text explains that saints, who are the personification of Brahman, incarnate by their own will for the welfare of devotees and are not bound by the karmic cycles of birth and death that apply to ordinary beings. Chapter 43 describes Sai Samarth as a 'mass of bliss' and the 'complete Supreme Brahman,' for whom birth or death is irrelevant. A saint's departure is merely a merging back into their unmanifest, true form once their designated task on Earth is complete, not an actual cessation of being.