Sayyiduna Abdullah ibn Abbas (may Allah be pleased with them both) narrates: I heard the Prophet Muhammad (peace and blessings be upon him) delivering a sermon, saying:“No man should ever be alone with a woman, and it is not permissible for any woman to travel except that she has a mahram relative with her.”A man stood up in the presence of the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! My name has been registered for such-and-such battle, and my wife is going for Hajj. The Prophet (peace and blessings be upon him) said:“Go and perform Hajj with your wife.”Sufyan, the narrator, says: People from Kufa used to come to (my teacher) Amr ibn Dinar al-Makki and ask him about this hadith. He used to say: How is that hadith, in which it is mentioned that my name has been written for such-and-such battle?