Sahih al-Bukhari, Volume 7, Book 72, Hadith 749 (USC-MSA) ⓘ
Narrated Isaa bin Tahman: Anas bin Malik brought out for us, two sandals having two straps. Thabit Al-Banani said, "These were the sandals of the Prophet."
حَدَّثَنِي مُحَمَّدٌ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا عِيسَى بْنُ طَهْمَانَ، قَالَ خَرَجَ إِلَيْنَا أَنَسُ بْنُ مَالِكٍ بِنَعْلَيْنِ لَهُمَا قِبَالاَنِ، فَقَالَ ثَابِتٌ الْبُنَانِيُّ هَذِهِ نَعْلُ النَّبِيِّ صلى الله عليه وسلم.
also referenced under: Book 77, Hadith 75 (In-Book) & Hadith 5858 (DarusSalam)