This paper discusses the part of the life of the Prophet wherein all of the aims of the Prophet’s apostleship and all of his teachings are concentrated. Those who believe in the doctrine of prophethood acknowledge that it is a divine duty and a mission from God. They consider that God appointed it to those whom He selected from among His good servants, from those who were exalted among mankind. They believe that Allah sent the Prophets to teach people wisdom and knowledge and the ways of happiness and goodness.

Revelation is one of the most important basis upon which the ideology of religious truths, realities and teachings is constructed. In other words, with Revelation “God prepares His prophet to receive from Him the highest cosmic truths that he may convey them to mankind.” Both remarks imply the same concept that is to say that all of the basic premises of a religion such as Islam should have come through revelation.

Muslim scholars and biographers believe that the Mission of the Prophet began with a revelation which was sent from God through His angel Gabriel. If so, the Prophet’s Mission occupies the first position in his life. This is the common beliefs of all Muslim biographers, though, as we will see later, there may be differences between their attitudes on the issue of the Mission. In the present discussion, the spiritual and psychological state of the Prophet at the time of his Mission will be analyzed from the point of view of biographers. Here the following issues will be of concern:

1- The date of the Mission which is a Sunni and Shi‘ i debate.

2- 2- The specific circumstances of the Mission, such as how prophethood began i.e., in sleep or through true visions. Did the Prophet tremble with fear when he received the revelation?