The Prophet said: "Three days." I think he said, "And three nights during which the traveler may wipe over his leather socks."

عَنِ النَّبِيِّ ﷺ قَالَ ثَلاَثَةُ أَيَّامٍ أَحْسِبُهُ قَالَ وَلَيَالِيهِنَّ لِلْمُسَافِرِ فِي الْمَسْحِ عَلَى الْخُفَّيْنِ