"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. (Using translation from Nasāʾī 1077)  

أَنَّ رَسُولَ اللهِ ﷺ قَنَتَ شَهْرًا قَالَ شُعْبَةُ لَعَنَ وَقَالَ هِشَامٌ يَدْعُو عَلَى أَحْيَاءَ مِنْ أَحْيَاءِ الْعَرَبِ ثُمَّ تَرَكَهُ بَعْدَ الرُّكُوعِ هَذَا قَوْلُ هِشَامٍ وَقَالَ شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسٍ أَنَّ النَّبِيَّ ﷺ قَنَتَ شَهْرًا يَلْعَنُ رَعْلًا وَذَكْوَانَ وَلَحْيَانَ