The Messenger of Allah (ﷺ) recited the supplication (Qunut) daily for a month at the noon, afternoon, sunset, night and morning prayers. When he said: "Allah listens to him who praises Him" in the last rak'ah, invoking a curse on some clans of Banu Sulaym, Ri'l, Dhakwan and Usayyah, and those who were standing behind him said: Amen.
Reference: Sunan Abi Dawud 1443 In-book : Book 8, Hadith 28 English translation : Book 8, Hadith 1438
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