Sa'dbin Tariq said:
"I said to my father: 'O my father! You prayedbehind the Messenger of Allah (ﷺ) and behind Abu Bakr, 'Umar and'Uthman, and behind 'Ali here in Kufah for about five years. Didtheyrecite Qunut in Fajr?' He said: 'O my son! That is aninnovation.'" (ES)
English reference (ES): Vol. 1, Book 5, Hadith 1241 (ES)
Arabic reference (ES): Book 5, Hadith 1299 (ES)