Hadith 6:26
'Uthman bin ’Affan (RAA) narrated that the Messenger of Allah (ﷺ) said:
“A Muhrim (one in the state of Ihram) must not contract marriage, nor help others contract marriage, nor get engaged to marry." Related by Muslim.
وَعَنْ عُثْمَانَ بْنِ عَفَّانَ - رضى الله عنه - أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ: { لَا يَنْكِحُ اَلْمُحْرِمُ, وَلَا يُنْكِحُ, وَلَا يَخْطُبُ } رَوَاهُ مُسْلِمٌ
Original Reference: Bulugh al-Maram 733