A woman must not make a journey of three days unless she is accompanied by a man who is within the prohibited degree. (Using translation from Abū Dāʾūd 1727)
عَنِ النَّبِيِّ ﷺ قَالَ لَا تُسَافِرِ امْرَأَةٌ مَسِيرَةَ ثَلَاثَةِ أَيَّامٍ إِلَّا مَعَ ذِي مَحْرَمٍ