[Machine] The Prophet ﷺ named a day and a night a journey. Ibn Umar and Ibn Abbas used to shorten and break their fast during four "burud", which are sixteen "farsakh" long.
وَسَمَّى النَّبِيُّ ﷺ يَوْمًا وَلَيْلَةً سَفَرًا. وَكَانَ ابْنُ عُمَرَ وَابْنُ عَبَّاسٍ ؓ مْ يَقْصُرَانِ وَيُفْطِرَانِ فِي أَرْبَعَةِ بُرُدٍ وَهْيَ سِتَّةَ عَشَرَ فَرْسَخًا.
The Prophet ﷺ said, "A woman should not travel for more than three days except with a Dhi-Mahram (i.e. a male with whom she cannot marry at all, e.g. her brother, father, grandfather, etc.) or her own husband.)"
قُلْتُ لأَبِي أُسَامَةَ حَدَّثَكُمْ عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ ؓ أَنَّ النَّبِيَّ ﷺ قَالَ لاَ تُسَافِرِ الْمَرْأَةُ ثَلاَثَةَ أَيَّامٍ إِلاَّ مَعَ ذِي مَحْرَمٍ
The Prophet ﷺ said, "A woman should not travel for more than three days except with a Dhi-Mahram."
عَنِ النَّبِيِّ ﷺ قَالَ لاَ تُسَافِرِ الْمَرْأَةُ ثَلاَثًا إِلاَّ مَعَ ذِي مَحْرَمٍ
The Prophet ﷺ said, "It is not permissible for a woman who believes in Allah and the Last Day to travel for one day and night except with a Mahram."
قَالَ النَّبِيُّ ﷺ لاَ يَحِلُّ لاِمْرَأَةٍ تُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ أَنْ تُسَافِرَ مَسِيرَةَ يَوْمٍ وَلَيْلَةٍ لَيْسَ مَعَهَا حُرْمَةٌ