(4) باب الإحرام وما يتعلق به
'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. (IT)
Reference (IT): Bulugh al-Maram 733 (IT)
In-book reference (IT): Book 6, Hadith 26 (IT)
English translation (IT): Book 6, Hadith 752 (IT)