حَدَّثَنَا ابْنُ الْمُثَنَّى، حَدَّثَنَا ابْنُ أَبِي عَدِيٍّ، عَنْ حَنْظَلَةَ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، عَنْ عَائِشَةَ، قَالَتْ ‏:‏ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّي مِنَ اللَّيْلِ عَشْرَ رَكَعَاتٍ، وَيُوتِرُ بِسَجْدَةٍ، وَيَسْجُدُ سَجْدَتَىِ الْفَجْرِ، فَذَلِكَ ثَلاَثَ عَشْرَةَ رَكْعَةً ‏.‏

'Abd Allah b. Abi Qais said that he asked 'Aishah

The narrator Ahmad added in his version: He would not observe the witr with two rak'ahs before the dawn. I asked: With what would he observe the witr ? She said: He would never leave it. The version of Ahmad does not mention the words "six and three (rak'ahs)".