Muwatta Imam Malik Book of Hajj, Hadith 71

Yahya related to me from Malik, from Nafi, from Nubayh ibn Wahb, who was from the tribe of Bani Abd ad-Dar, that Umar ibn Ubaydullah sent a message to Aban ibn Uthman (who was amir of the hajj at the time), while both of them were in ihram, saying, "I want to marry Bint Shayba ibn Jubayr to Talha ibn Umar and I want you to be present." Aban told him that he should not do that and said, "I heard Uthman ibn Affan say that the Messenger of Allah ﷺ said, 'A man in ihram should not marry, or give in marriage, or get betrothed.' "

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ نُبَيْهِ بْنِ وَهْبٍ، أَخِي بَنِي عَبْدِ الدَّارِ أَنَّ عُمَرَ بْنَ عُبَيْدِ اللَّهِ، أَرْسَلَ إِلَى أَبَانَ بْنِ عُثْمَانَ - وَأَبَانُ يَوْمَئِذٍ أَمِيرُ الْحَاجِّ وَهُمَا مُحْرِمَانِ - إِنِّي قَدْ أَرَدْتُ أَنْ أُنْكِحَ طَلْحَةَ بْنَ عُمَرَ بِنْتَ شَيْبَةَ بْنِ جُبَيْرٍ وَأَرَدْتُ أَنْ تَحْضُرَ . فَأَنْكَرَ ذَلِكَ عَلَيْهِ أَبَانُ وَقَالَ سَمِعْتُ عُثْمَانَ بْنَ عَفَّانَ يَقُولُ قَالَ رَسُولُ اللَّهِ ﷺ " لاَ يَنْكِحِ الْمُحْرِمُ وَلاَ يُنْكِحْ وَلاَ يَخْطُبْ " .