It was narrated from Abu Malik Al-Ashja'i that his father said:
"I prayed behind the Messenger of Allah (ﷺ) and he did not say the Qunut, and I prayed behind Abu Bakr and he did not say the Qunut, and I prayed behind Umar and he did not say the Qunut, and I prayed behind Uthman and he did not say the Qunut, and I prayed behind Ali and he did not say the Qunut." Then he said: "O my son, this is an innovation."
Reference: Sunan an-Nasa'i 1080 In-book : Book 12, Hadith 52 English translation : Vol. 2, Book 12, Hadith 1081
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