Abu '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)?'" (ID)
English reference (ID): Vol. 4, Book 11, Hadith 2447 (ID)
Arabic reference (ID): Book 37, Hadith 2635 (ID)