"The Qur'an mentions that this was the month in which the Qur'an was revealed to the Prophet Muhammad -- peace be upon him. He was, in fact, fasting at the time and engaged in prayer in a cave, where he liked to meditate, when the revelation came to him. This presence, this spirit of revelation, is generally understood by Muslims to be the Angel Gabriel. People engage in reading the Qur'an during this month, and the Qur'an has been divided into 30 sections for convenience, so you do one section each of the 30 days."
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