Can you explain the distinction between birth and death as described in the text, and why these concepts don't apply to Sai?

The text in Chapter 43 provides a clear definition: the union of the body and senses is birth, while their separation is death. This cycle of 'binding or loosening of the bond' is a characteristic of ordinary existence. However, for a being like Sai Samarth, who is the Supreme Brahman, these concepts are irrelevant. The source states that since he does not know the birth of a body, he cannot experience its death. He is devoid of bodily impulses. Saints incarnate by their own will for the welfare of devotees, making birth and death 'false imaginations' in their context. They are always in their true, unmanifest state, and the physical body is just a temporary vessel they assume for their divine play.