(17) باب صَلاَةِ اللَّيْلِ وَعَدَدِ رَكَعَاتِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي اللَّيْلِ وَأَنَّ الْوِتْرَ رَكْعَةٌ وَأَنَّ الرَّكْعَةَ صَلاَةٌ صَحِيحَةٌ
A hadith like this has been narrated by 'A'isha by another chain of transmitters. (ES)
Reference (ES): Sahih Muslim 743 b (ES)
In-book reference (ES): Book 6, Hadith 162 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1617 (ES)