Hadith # 990
Ibn 'Abbas (May Allah be pleased with them) reported: The Prophet (PBUH) said, "No man must not be alone with a woman except in the presence of her (Mahram). No woman should travel except in company of a (Mahram)." A man said: "O Messenger of Allah! I have been enrolled for such and such expedition, and my wife left for Hajj." He (PBUH) said to him, "Go and perform Hajj with your wife."
[Al-Bukhari and Muslim]
Commentary
This Hadih proves that under no circumstance woman may travel alone. The Shari'ah strictly bans a meeting of this kind between two opposite sexes. Even if nothing objectionable happens, a mischievous person may exploit this situation and talk about them slanderously. Families disregardful of Hijab provide instances of illicit relationship between a man and a woman related to each other.
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