How does the text explain the fundamental concepts of birth and death, and how do they apply to avatars?

The text provides a philosophical definition in Chapter 43, stating that the union of the body and senses is birth, while their separation constitutes death. These two are inseparably linked. However, this paradigm does not fully apply to avatars who incarnate by their own will with the sole desire for the welfare of devotees. For these great souls, who can place their feet on the head of Time, birth and death are described as 'false imaginations.' Chapter 43 emphasizes that they are not touched by this cycle in the same way, as their existence is not bound by the limitations of a mortal body.