"They said: 'O Messenger of Allah! What about the purification of the leather socks?' He said: 'For the traveler it is three days and nights, and for the resident it is one day and one night.'"
قَالُوا يَا رَسُولَ اللَّهِ مَا الطُّهُورُ عَلَى الْخُفَّيْنِ قَالَ لِلْمُسَافِرِ ثَلاَثَةُ أَيَّامٍ وَلَيَالِيهِنَّ وَلِلْمُقِيمِ يَوْمٌ وَلَيْلَةٌ