ENOfficial
Anas said the Prophet’s sandal had two thongs. Bukhari transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَنَسٍ قَالَ: إِنَّ نَعْلَ النَّبِيِّ صَلَّى الله عَلَيْهِ وَسلم كَانَ لَهَا قبالان
sunnah.com
Mishkat al-Masabih
Book 22Hadith Number 4408