Sahih Muslim Book: 7, Hadith: 1756

وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ عِرَاكِ بْنِ مَالِكٍ، عَنْ عُرْوَةَ، أَنَّ عَائِشَةَ، أَخْبَرَتْهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُصَلِّي ثَلاَثَ عَشْرَةَ رَكْعَةً بِرَكْعَتَىِ الْفَجْرِ ‏.‏ Abu Salama b. Abd al-Rahman asked ‘A’isha about the (night) prayer of the Messenger of Allah (may peace be upon him) during the month of Ramadan. She said:The Messenger of Allah (may peace be upon him) did not observe either in Ramadan or in other months more than eleven rak’ahs (of the night prayer). He (in the first instance) observed four rak’ahs. Ask not about their excellence and their length (i. e. these were matchless in perfection and length). He again observed four rak’ahs, and ask not about their excellence and their length. He would then observe three rak’ahs (of the Witr prayer). ‘A’isha again said: I said: Messenger of Allah, do you sleep before observing the W...