Muhammad, the prophet of Islam, was a direct descendent of Ishmael through his second son, Kedar. Muhammad received revelations from an angel whom he believed to be Gabriel. These revelations later became the book of the Muslims, known as the Qur’an. Muslims believe that Abraham took his firstborn, Ishmael, to the altar of sacrifice on the mount instead of Isaac to substantiate Ishmael as the seed through which the whole earth would be blessed. The Muslims also believe that Muhammad was the fulfillment