Muhammad's body will not decay because Allah has forbidden the earth from consuming the bodies of the Prophets.

According to Islamic tradition, Muhammad claimed that Allah would ensure that his body remains incorruptible, similar to the bodies of other prophets. However, the Bible presents clear examples of prophets whose bodies did decay, such as Joseph, who instructed his brothers to carry his bones out of Egypt after his death, and Elisha, whose bones were involved in a miraculous event after his burial. These accounts indicate that decay is a natural part of the human condition, even for prophets of God. Furthermore, the Quran itself acknowledges the previous scriptures, which confirm the truth of God's prophets, thereby aligning with the biblical narrative that contradicts the claim of incorruptibility. If Muhammad's assertion about his body were true, it would stand in stark contrast to the biblical accounts of God's prophets, raising questions about his authenticity as a prophet.