'When we were traveling, Messenger of Allah would order us not to remove our Khuff for three days and nights, except for Janabah, but not for defecating, urinating, and sleep."
كَانَ رَسُولُ اللَّهِ ﷺ يَأْمُرُنَا إِذَا كُنَّا سَفْرًا أَنْ لاَ نَنْزِعَ خِفَافَنَا ثَلاَثَةَ أَيَّامٍ وَلَيَالِيَهُنَّ إِلاَّ مِنْ جَنَابَةٍ وَلَكِنْ مِنْ غَائِطٍ وَبَوْلٍ وَنَوْمٍ