Abdullah b. Umar (Allah -be pleased with them) reported Allah's Apostle (ﷺ) as saying:
It is not lawful for a woman who believes in Allah and the Hereafter to travel for more than three nights journey except when there is a Mahram with her.
Reference: Sahih Muslim 1338 c In-book : Book 15, Hadith 464 USC-MSA web (English) : Book 7, Hadith 3098 (deprecated)
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