Hadith
أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا أَبُو دَاوُدَ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، وَهِشَامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَنَتَ شَهْرًا - قَالَ شُعْبَةُ لَعَنَ رِجَالاً وَقَالَ هِشَامٌ يَدْعُو عَلَى أَحْيَاءٍ مِنْ أَحْيَاءِ الْعَرَبِ - ثُمَّ تَرَكَهُ بَعْدَ الرُّكُوعِ . هَذَا قَوْلُ هِشَامٍ وَقَالَ شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسٍ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَنَتَ شَهْرًا يَلْعَنُ رِعْلاً وَذَكْوَانَ وَلِحْيَانَ .
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
Sahih · Abu Ghuddah
Sunan an-Nasa'i 1077 ·Book 12, Hadith 49·Also available on sunnah.com·