Sunan An-Nasa'i
Hadith #1077
It was narrated from Anas:""The Messenger of Allah (ﷺ) said the Qunut for a month.""- (One of the narrators) Shu'bah said: ""He cursed some men."" Hisham said: ""He supplicated against some of the tribes of Arabs.""-""Then he stopped doing that after bowing."" This is what Hisham said. Shu'bah said, narrating from Qatadah, from Anas that the Prophet (ﷺ) said the Qunut for a month, cursing Ri'l, Dhawkan and Lihyan