Jami` at-Tirmidhi 1170
جامع الترمذي#1170SahihAbu Hurairah narrated that The Messenger of Allah said:“A woman is not to travel the distance of a day and a night unless she is accompanied by someone who is a Mahram.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 12:25