Sahih al-Bukhari 4094
صحيح البخاري#4094SahihNarrated Anas:The Prophet (ﷺ) said Al-Qunut after Bowing (i.e. Ar-Ruku') for one month, invoking evil upon (the tribes of) Ril and Dhakwan. He used to say, "Usaiya disobeyed Allah and His Apostle
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: 64:138