When he was forty, the age of complete perfection at which Prophets were always ordered to disclose their Message, signs of his Prophethood started to appear and twinkle on the horizons of life; they were the true visions he used to experience for six months. The period of Prophethood was 23 years; so the period of these six months of true visions constituted an integral part of the forty-six parts of Prophethood. In Ramadan, in his third year of solitude in the cave of Hira’, Allâh’s Will desired His mercy to flow on earth and Muhammad (Peace be upon him) was honoured with Prophethood, and the light of Revelation burst upon him with some verses of the Noble Qur’ân.
As for the exact date, careful investigation into circumstantial evidence and relevant clues point directly to Monday, 21st. Ramadan at night, i.e. Au, 10, 610 A.D. with Prophet Muhammad (Peace be upon him) exactly 40 years, 6 months and 12 days of age, i.e. 39 Gregorian years, 3 months and 22 days.
‘Aishah, the veracious, gave the following narration of that most significant event that brought the Divine light which would dispel the darkness of disbelief and ignorance. It led life down a new course and brought about the most serious amendment to the line of the history of mankind:
Forerunners of the Revelation assumed the form of true visions that would strikingly come true all the time. After that, solitude became dear to him and he would go to the cave, Hira’, to engage in Tahannuth (devotion) there for a certain number of nights before returning to his family, and then he would return for provisions for a similar stay. At length, unexpectedly, the Truth (the angel) came to him and said, “Recite.” “I cannot recite,” he [Muhammad (Peace be upon him)] said. The Prophet (Peace be upon him) described: “Then he took me and squeezed me vehemently and then let me go and repeated the order ‘Recite.’ ‘I cannot recite’ said I, and once again he squeezed me and let me till I was exhausted. Then he said: ‘Recite.’ I said ‘I cannot recite.’ He squeezed me for a third time and then let me go and said:
“Read! In the Name of your Lord, Who has created (all that exists), has created man from a clot (a piece of thick coagulated blood). Read! and your Lord is the Most Generous.’” [96:1-3]