Sahih al-Bukhari 355
صحيح البخاري#355SahihNarrated `Umar bin Abi Salama:I saw the Prophet (ﷺ) offering prayers in a single garment in the house of Um-Salama and he had crossed its ends around his shoulders
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: 8:7