Hadith 3:217
Abu Bakr said that the Prophet gave permission for the traveller to wipe over his shoes during three days and nights, and for one who was not travelling during a day and a night, if be had been in a state of purity when he put them on. Al-Athram transmitted it in his Sunan . Ibn Khuzaima and Daraqutni also transmitted it. Al-Khattabi said in al-Muntaqa that the isnad is sound.
عَنْ أَبِي بَكْرَةَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: أَنَّهُ رَخَّصَ لِلْمُسَافِرِ ثَلَاثَةَ أَيَّامٍ وَلَيَالِيَهُنَّ وَلِلْمُقِيمِ يَوْمًا وَلَيْلَةً إِذَا تَطَهَّرَ فَلَبِسَ خُفَّيْهِ أَنْ يَمْسَحَ عَلَيْهِمَا. رَوَاهُ الْأَثْرَمُ فِي سُنَنِهِ وَابْنُ خُزَيْمَةَ وَالدَّارَقُطْنِيّ وَقَالَ الْخَطَّابِيُّ: هُوَ صَحِيحُ الْإِسْنَادِ هَكَذَا فِي الْمُنْتَقى
Original Reference: Mishkat al-Masabih 519