Once the Prophet (ﷺ) entered the mosque, a man came in, offered the prayer and greeted the Prophet. The
Prophet returned his greeting and said to him, "Go back and pray again for you have not prayed." The
man offered the prayer again, came back and greeted the Prophet. He said to him thrice, "Go back and
pray again for you have not prayed." The man said, "By Him Who has sent you with the truth! I do
not know a better way of praying. Kindly teach Me how to pray." He said, "When you stand for the
prayer, say Takbir and then recite from the Qur'an what you know and then bow with calmness till
you feel at ease, then rise from bowing till you stand straight. Afterwards prostrate calmly till you feel
at ease and then raise (your head) and sit with Calmness till you feel at ease and then prostrate with
calmness till you feel at ease in prostration and do the same in the whole of your prayer."
Sahih al-Bukhari Book 10, Hadith 188