كتاب النكاح
16  
The Book of Marriage
(11)
Chapter: It is recommended to get married and arrange marriages in Shawwal, and it is recommended to consummate the marriage in that month
(11)
باب اسْتِحْبَابِ التَّزَوُّجِ وَالتَّزْوِيجِ فِي شَوَّالٍ وَاسْتِحْبَابِ الدُّخُولِ فِيهِ ‏
Sahih Muslim 1423 b

This hadith has been narrated on the authority of Sufyan with the same chain of transmitters, but he made no mention of the act of 'A'isha (being admitted as a wife in the house of the Holy Prophet).

وَحَدَّثَنَاهُ ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا سُفْيَانُ، بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ فِعْلَ عَائِشَةَ‏.‏
Reference : Sahih Muslim 1423b
In-book reference : Book 16, Hadith 86
USC-MSA web (English) reference : Book 8, Hadith 3313
  (deprecated numbering scheme)