Sahih Muslim 3260
صحيح مسلم#3260SahihAbdullah 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 15:464