The Book of Fasting (Kitab Al-Sawm)

Muslim :: Book 6 : Hadith 2589

'Abdullah b. 'Amr (Allah be pleased with them) reported: The Messenger of Allah (may peace be upon him) said to me: Recite the whole of the Qur'An during every nonth. I said: I find power (to recite it) in a shorter period. He said: Then recite it in twenty nights. I said: I find power (to recite it in a shorter period even than this), whereupon he said: Then recite it in seven (nights) and do not exceed beyond it.

Source materials are from the University of Southern California MSA site
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