Sahih al-Bukhari 757

It is related from Abu Hurayra, "The Messenger of Allah, may Allah bless him and grant him peace, entered the mosque and a man entered and prayed. He greeted the Prophet, may Allah bless him and grant him peace, who returned the greeting and said, 'Go and back and pray. You have not prayed.' He went back and prayed as he had prayed before. Then he came and greeted the Prophet, may Allah bless him and grant him peace,who said three times, 'Go back and pray for you have not prayed.' He said, 'By the One who sent you with the truth, I cannot do any better than that, so teach me.' He said, 'When you stand for the prayer, say the takbir and then recite something you know well from the Qur'an and then do ruku' until you are at rest in your ruku' . Then stand back up until you are completely upright. Then go into sajda until you are at rest in your sajda. Then sit back until you are at rest in the sitting position. Do that throughout all of your prayer.' "