Ibn Abbas (RA) reported: I heard Allahs Messenger ﷺ delivering a sermon and making this observation: "No person should be alone with a woman except when there is a Mahram with her, and the woman should not undertake journey except with a Mahram." A person stood up and said: Allahs Messenger, my wife has set out for pilgrimage, whereas I am enlisted to fight in such and such battle, whereupon he said: "You go and perform Hajj with your wife."