Sahih al-Bukhari 5756
صحيح البخاري#5756SahihNarrated Anas:The Prophet (ﷺ) said, "No 'Adwa (no contagious disease is conveyed to others without Allah's permission), nor Tiyara, but I like the good Fal, i.e., the good word
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: 76:71