كتاب النكاح
16  
The Book of Marriage
(5)
Chapter: The prohibition of marriage for one who is in Ihram, and it is disliked for him to propose marriage
(5)
باب تَحْرِيمِ نِكَاحِ الْمُحْرِمِ وَكَرَاهَةِ خِطْبَتِهِ ‏‏
Sahih Muslim 1410 b

Ibn 'Abbas (Allah be pleased with them) reported:

Allah's Messenger. (ﷺ) married Maimuna while he was a Muhrim.
وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا دَاوُدُ بْنُ عَبْدِ الرَّحْمَنِ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ جَابِرِ بْنِ زَيْدٍ أَبِي الشَّعْثَاءِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّهُ قَالَ تَزَوَّجَ رَسُولُ اللَّهِ صلى الله عليه وسلم مَيْمُونَةَ وَهُوَ مُحْرِمٌ ‏.‏
Reference : Sahih Muslim 1410b
In-book reference : Book 16, Hadith 55
USC-MSA web (English) reference : Book 8, Hadith 3284
  (deprecated numbering scheme)