Jami` at-Tirmidhi 2447
جامع الترمذي#2447SahihAbu 'Imaran Al-Jawni narrated :"From Anas bin Malik who said : 'I do not recognize anything (today) from what we were upon during the time of The Messenger of Allah (s.a.w).' So I said : 'What about the Salat?' He said: 'Have you (people) not done what you know (you have done)?'" Other chains report similar narrations
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
Zubair Ali ZaiIsnaad Hasan
In-book reference: 37:33