"Messenger of Allah entered the Masjid, and a man entered and offered Salat. Then he came to give Salam to the Propet. He returned the Salam to him and said: 'Go back and perform Salat, for indeed you have not prayed.' So the man returned to pray as he had prayed. Then he came to give Salam to the Prophet. He returned Salam to him, then [Messenger of Allah] said: 'Go back and perform Salat, for indeed you have not prayed' until he had done that three times. So the man said to him: 'By the One who sent you with the Truth, I do not know any better than this, so teach me.' So he said [to him]: 'When you stand for Salat then say the Takbir, then recite what is easy for you of the Quran. Then bow until you are at rest while bowing, then rise up until you are at rest sitting. Do that in all of your Salat.'"
أَنَّ رَسُولَ اللَّهِ ﷺ دَخَلَ الْمَسْجِدَ فَدَخَلَ رَجُلٌ فَصَلَّى ثُمَّ جَاءَ فَسَلَّمَ عَلَى النَّبِيِّ ﷺ فَرَدَّ عَلَيْهِ السَّلاَمَ فَقَالَ ارْجِعْ فَصَلِّ فَإِنَّكَ لَمْ تُصَلِّ فَرَجَعَ الرَّجُلُ فَصَلَّى كَمَا كَانَ صَلَّى ثُمَّ جَاءَ إِلَى النَّبِيِّ ﷺ فَسَلَّمَ عَلَيْهِ فَرَدَّ عَلَيْهِ السَّلاَمَ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ ارْجِعْ فَصَلِّ فَإِنَّكَ لَمْ تُصَلِّ حَتَّى فَعَلَ ذَلِكَ ثَلاَثَ مِرَارٍ فَقَالَ لَهُ الرَّجُلُ وَالَّذِي بَعَثَكَ بِالْحَقِّ مَا أُحْسِنُ غَيْرَ هَذَا فَعَلِّمْنِي فَقَالَ إِذَا قُمْتَ إِلَى الصَّلاَةِ فَكَبِّرْ ثُمَّ اقْرَأْ بِمَا تَيَسَّرَ مَعَكَ مِنَ الْقُرْآنِ ثُمَّ ارْكَعْ حَتَّى تَطْمَئِنَّ رَاكِعًا ثُمَّ ارْفَعْ حَتَّى تَعْتَدِلَ قَائِمًا ثُمَّ اسْجُدْ حَتَّى تَطْمَئِنَّ سَاجِدًا ثُمَّ ارْفَعْ حَتَّى تَطْمَئِنَّ جَالِسًا وَافْعَلْ ذَلِكَ فِي صَلاَتِكَ كُلِّهَا