Sunan an-Nasa'i, Book 48, Hadith 330 (In-Book) ⓘ
It was narrated from Abu Hurairah that: The Prophet [SAW] said: "If the strap of the sandal of one of you breaks, let him not walk in one sandal until he fixes it."
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ، قَالَ حَدَّثَنَا الأَعْمَشُ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا انْقَطَعَ شِسْعُ نَعْلِ أَحَدِكُمْ فَلاَ يَمْشِ فِي نَعْلٍ وَاحِدَةٍ حَتَّى يُصْلِحَهَا " .
also referenced under: Hadith 5369 (Reference) & Volume 6, Book 48, Hadith 5371 (DarusSalam)