How does the text explain the concepts of birth and death, especially for enlightened beings like Sai Baba?

According to Chapter 43, birth is defined as the union of the body and senses, while death is their separation. However, for great souls like Sai Baba who incarnate by their own will for the welfare of devotees, birth and death are considered "false imaginations." The text explains that such beings have conquered mortality and "place their feet on the head of Time." Sai Baba is described as the complete Supreme Brahman, for whom the concepts of birth and death are inapplicable. As Chapter 43 states, saints are essentially "beyond the womb" and their appearance is for helping others. When their task is complete, they do not die but rather merge back into their true, unmanifest form.