Musnad Ahmad 32:1312

'Uthman ibn 'Umar narrated to us, Malik ibn Anas informed us, from Ishaq ibn 'Abdullah ibn Abi Talhah, from Anas ibn Malik: "The Messenger of Allah (ﷺ) invoked [curses] against those who killed the people of Bi'r Ma'unah for thirty mornings: against Ri'l, Dhakwan, Lihyan, and Banu 'Usayyah, who disobeyed Allah and His Messenger." And the Qur'an was revealed regarding that, which we used to recite: "Convey to our people on our behalf that we have met our Lord, and He is pleased with us and has pleased us."