Sahih al-Bukhari 1302
صحيح البخاري#1302SahihNarrated Anas:The Prophet (ﷺ) said, "The real patience is at the first stroke of a calamity
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: 23:60