Sahih al-Bukhari 4621
صحيح البخاري#4621SahihNarrated Anas:The Prophet (ﷺ) delivered a sermon the like of which I had never heard before. He said, "If you but knew what I know then you would have laughed little and wept much." On hearing that, the companions of the Prophet (ﷺ) covered their faces and the sound of their weeping was heard. A man said, "Who is my father?" The Prophet (ﷺ) said, "So-and-so." So this Verse was revealed: "Ask not about things which, if made plain to you, may cause you trouble
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: 65:143