Sunan Abi Dawud 1726
سنن أبي داود#1726SahihAbu Sa’id reported The Apostel of Allah (SWAS) as saying:A woman who believes in Allah and the Last Day must not make a journey of more than three days unless she is accompanied by her father or her brother, or her husband or her son or her relative who is within the prohibited degree
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (1340)
In-book reference: 11:6