How does the scripture explain the concepts of birth and death, especially in relation to saints like Sai Baba?

According to the philosophy presented in Chapter 43, birth is defined as the union of the body and senses, while death is their separation. However, for great souls and avatars who incarnate by their own will for the welfare of devotees, both birth and death are considered false imaginations. The text explains that a being like Sai Samarth, who is a mass of bliss and the complete Supreme Brahman, is devoid of bodily impulses. For him, the consciousness of the body is an illusion, and therefore the concepts of birth and death do not apply. Death is described as being like dust before such a being, who can turn the body to ashes even before it falls.