How does the scripture explain the concepts of birth and death, and how did Sai Baba transcend them?

The scripture explains that birth is the union of body and senses, while death is their separation, making them inseparable from each other. However, for enlightened beings who incarnate for the welfare of devotees, birth and death are considered false imaginations. As detailed in Chapter 43, Sai Baba is described as the complete Supreme Brahman, a mass of bliss who is devoid of bodily impulses. For him, there is no birth or death. He turned his body to ashes even before it fell, making death like dust before him. He viewed life as a modification of the body and death as a state of happiness for it, thus placing his feet on the head of Time.