حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، حَدَّثَنَا حَفْصٌ، - يَعْنِي ابْنَ غِيَاثٍ - عَنِ الأَعْمَشِ، عَنْ أَبِي إِسْحَاقَ، عَنْ عَبْدِ خَيْرٍ، عَنْ عَلِيٍّ، - رضى الله عنه - قَالَ لَوْ كَانَ الدِّينُ بِالرَّأْىِ لَكَانَ أَسْفَلُ الْخُفِّ أَوْلَى بِالْمَسْحِ مِنْ أَعْلاَهُ وَقَدْ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَمْسَحُ عَلَى ظَاهِرِ خُفَّيْهِ .
Narrated Ali ibn AbuTalib: If the religion were based on opinion, it would be more important to wipe the under part of the shoe than the upper but I have seen the Messenger of Allah (PBUH) wiping over the upper part of his shoes. Translation Not Available
Book Ref: Sunan Abi Dawud Book 1 Hadith 162
Web Ref: Sunan Abi Dawud Book 1 Hadith 162