No. The Holy Qur’an was not revealed completely all at once.Rather, it was revealed bit by bit. The verses contained in it were revealed against the backdrop of varying circumstances over a long period stretching between twenty- three years. There was no fixed time period during which the Prophet received the divine revelation. There had been instances when the Prophet had received revelation more than once in a single day. Sometimes it was only a few words that were revealed, full words that were, in their turn, to be placed in a particular position within a particular chapter. On some occasions,whole chapters where revealed to the Prophet at a streach. Indeed, the Qur’an’s has been a compilation of verses that were revealed according to the circumstances and occasions that demanded them.