Hadithcore
Sunan Ibn Majah, 3614
sahih· Darussalam

It was narrated that ‘Abdullah bin ‘Abbas said:

“The sandals of the Prophet (ﷺ) had two thongs doubled around their straps.”

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ عَبْدِ اللَّهِ بْنِ الْحَارِثِ، عَنْ عَبْدِ اللَّهِ بْنِ الْعَبَّاسِ، قَالَ كَانَ لِنَعْلِ النَّبِيِّ ـ صلى الله عليه وسلم ـ قِبَالاَنِ مَثْنِيٌّ شِرَاكُهُمَا ‏.‏

References2 variants
In-Book Reference
Book 32, Hadith 65
English Reference
Vol. 4, Book 32, Hadith 3614