Sunan an-Nasa'i 5367
سنن النسائي#5367SahihAnas narrated that :The sandals of the Messenger of Allah [SAW] had two straps
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Bukhari
In-book reference: 48:328