Hadith 1409 a - The Book of Marriage - Sahih Muslim - صحيح مسلم - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

16. The Book of Marriage - كتاب النكاح

5) Chapter: The prohibition of marriage for one who is in Ihram, and it is disliked for him to propose marriage

Nubaih b. Wahb reported that 'Umar b. Ubaidullah intended to marry Talha b. 'Umar with the daughter of Shaiba b. Jubair; so he sent a messenger to Aban b. Uthman to attend the marriage, and he was at that time the Amir of Hajj. Aban said:

I heard 'Uthman b. 'Affan say that Allah's Messenger (ﷺ) had stated: A Muhrim must neither marry himself, nor arrange the marriage of another one, nor should he make the proposal of marriage.

Reference: 1409 a
English reference: Book 8, Hadith 3278
In-book reference: Book 16, Hadith 49
Grade: Sahih
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5) باب تَحْرِيمِ نِكَاحِ الْمُحْرِمِ وَكَرَاهَةِ خِطْبَتِهِ ‏‏

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ نَافِعٍ، عَنْ نُبَيْهِ بْنِ وَهْبٍ، أَنَّفَقَالَ أَبَانٌ سَمِعْتُ عُثْمَانَ بْنَ عَفَّانَ يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏‏ ‏.‏ "‏ لاَ يَنْكِحُ الْمُحْرِمُ وَلاَ يُنْكَحُ وَلاَ يَخْطُبُ ‏"