(74) باب سَفَرِ الْمَرْأَةِ مَعَ مَحْرَمٍ إِلَى حَجٍّ وَغَيْرِهِ
Ibn Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying:
A woman should not set out on three (days' journey) except when she has a Mahram with her.
Reference: Sahih Muslim 1338 a
In-book reference: Book 15, Hadith 462
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 3096