Nubaih bin Wahb says: Umar bin Ubaidullah wanted to arrange the marriage of his son (Talha) with the daughter of Shaibah bin Uthman, so he sent a message to Aban bin Uthman, who was at that time the Amir of Hajj. He said: I think this person is also a Bedouin (ignorant of the Shari'ah rulings). The fact is that a Muhrim can neither marry nor arrange a marriage. Sayyiduna Uthman (may Allah be pleased with him) narrated this to me from the Prophet Muhammad (peace and blessings be upon him).