Sahih Muslim 1410
Sahih Muslim · Book 16: The Book of Marriage · The prohibition of marriage for one who is in Ihram, and it is disliked for him to propose marriage
Ibn 'Abbas (Allah be pleased with them) reported:
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 .
Allah's Messenger. (ﷺ) married Maimuna while he was a Muhrim.