Muwatta Imam Malik Book of General Subjects, Hadith 37

Malik related to me from Said ibn Abi Said al-Maqburi from Abu Hurayra that the Messenger of Allah ﷺ said, "It is not halal for a woman who believes in Allah and the Last Day to travel the distance of a day and night without a man who is her mahram."

وَحَدَّثَنِي مَالِكٌ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " لاَ يَحِلُّ لاِمْرَأَةٍ تُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخَرِ تُسَافِرُ مَسِيرَةَ يَوْمٍ وَلَيْلَةٍ إِلاَّ مَعَ ذِي مَحْرَمٍ مِنْهَا " .