Jami` at-Tirmidhi 402
جامع الترمذي#402SahihAbu Malik Al-Ashjai narrated:"I said to my father: 'O my father! You offered Salat behind Allah's Messenger (S), Abu Bakr, Umar, Uthman, and Ali bin Abi Talib here in Al-Kufah for about five years. Did they say the Qunut?' He said: 'It is a newly invented matter my son
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:255