حَدَّثَنَا الصَّلْتُ بْنُ مُحَمَّدٍ قَالَ أَخْبَرَنَا مَهْدِيٌّ عَنْ وَاصِلٍ عَنْ أَبِي وَائِلٍ عَنْ حُذَيْفَةَ رَأَی رَجُلًا لَا يُتِمُّ رُکُوعَهُ وَلَا سُجُودَهُ فَلَمَّا قَضَی صَلَاتَهُ قَالَ لَهُ حُذَيْفَةُ مَا صَلَّيْتَ قَالَ وَأَحْسِبُهُ قَالَ لَوْ مُتَّ مُتَّ عَلَی غَيْرِ سُنَّةِ مُحَمَّدٍ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ
صحیح بخاری · Hadith 389
Narrated Hudhaifa that he saw a person bowing and prostrating imperfectly. When he finished his Salat, Hudhaifa told him that he had not offered Salat. The subnarrator added, "I think that Hudhaifa also said: Were you to die you would die on a "Sunna" (legal way) other than that of Muhammad (saws)."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020