One night when he was alone in the cave, Jibreel (AS) came to him in the form of a man and asked him to “Read!” Prophet (pbuh) replied “I cannot read”. The angel asked him again to “Read” after pressing him. Again the Prophet (pbuh) replied “I cannot read”. The angel further embraced him again and said “Read!” for the third time, the Prophet (pbuh) said “I cannot read”. Jibreel (AS) released him and revealed the following verses:
“Read in the name of your Lord, the Creator. He Who created man from a clot. Read! And your Lord is the Most Bounteous. Who taught by the Pen, taught man what he knew not.” [96:1-5]
Quran tells us that the first revelation was descended on the ‘Night of Power’ (Lailatul Qadir) in the month of Ramadan. The entire Quran was revealed over a period of about 22 years.
“The month of Ramadan is the month in which the Quran was revealed.” [2:185]
“We have indeed revealed this message during the Night of Power.” [97:1]