Narrated Anas: The Prophet 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."
Hadith ReferenceSahih Bukhari / The Book of Al- Maghazi / Hadith: 4094
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة