Sahih al-Bukhari 5804
صحيح البخاري#5804SahihNarrated Ibn `Abbas:The Prophet (ﷺ) said, "Whoever cannot get an Izar, can wear trousers, and whoever cannot wear sandals can wear Khuffs (socks made from thick fabric or leather)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 77:22