He saw a man who was not completing his bowing or his prostration properly. When the man finished his prayer, Hudhayfah said to him, "You have not prayed." And I think he added, "If you were to die in this state, you would die upon something other than the way of Muhammad ﷺ."
حدثنا الصلت بن محمد قال حدثنا مهدي بن ميمون عن واصل عن أبي وائل
رأى رجلا لا يتم ركوعه ولا سجوده فلما قضى صلاته قال له حذيفة ما صليت قال وأحسبه قال ولو مت مت على غير سنة محمد ﷺ