Can you explain the metaphors used in Chapter 8 to describe the transient and impure nature of the human body?

Chapter 8 employs several vivid metaphors to illustrate the impure and temporary nature of the physical form. It is described as a "washroom of excrement and urine," a "foul place of phlegm, pus, and saliva," and a "house for worms and insects." The text also refers to the body as a "carriage of flesh, blood, and muscle" and a "direct prison for the soul." Its fleeting existence is compared to a peepal leaf and the flame of a lamp, which appears singular but is different every moment. Despite this impurity, the chapter notes that it is only through this body that the Lord can be reached.