(58) باب الدُّعَاءِ عَلَى الْمُشْرِكِينَ
Narrated Anas:
The Prophet (ﷺ) sent a Sariya (an army detachment) consisting of men called Al-Qurra', and all of them were martyred. I had never seen the Prophet (ﷺ) so sad over anything as he was over them. So he said Qunut (invocation in the prayer) for one month in the Fajr prayer, invoking for Allah's wrath upon the tribe of 'Usaiya, and he used to say, "The people of 'Usaiya have disobeyed Allah and His Apostle."
Reference: Sahih al-Bukhari 6394
In-book reference: Book 80, Hadith 89
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 75, Hadith 403