It is narrated about Umar bin Ubaidullah: He sent a message to Aban bin Uthman. At that time, Aban was the Amir of Hajj. Both of them were in the state of Ihram. (The message was:) I am about to perform the marriage of Talha bin Umar with the daughter of Shaibah bin Jubair. I wish that you also be present on this occasion. But Aban bin Uthman refused his request and stated: I heard Sayyiduna Uthman Ghani (may Allah be pleased with him) narrate that the Messenger of Allah (peace and blessings be upon him) said: "A person in the state of Ihram cannot marry, cannot give a marriage proposal, and cannot perform the marriage of someone else."
Hadith Referenceصحیح ابن حبان / كتاب النكاح / 4123
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (1037)، «صحيح أبي داود» (1614): م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم