'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." (Using translation from Tirmidhī 96)
«كَانَ النَّبِيُّ ﷺ يُوصِينَا إِذَا سَافَرْنَا أَوْ كُنَّا سَفَرًا أَنْ لَا نَنْزِعَ خِفَافَنَا ثَلَاثَةَ أَيَّامٍ وَلَيَالِيَهُنَّ إِلَّا مِنْ جَنَابَةٍ وَلَكِنْ مِنْ بَوْلٍ وَنَوْمٍ وغائطٍ»