Musnad Ahmad 9635 — Musnad of Abu Hurayrah (may Allah be pleased with)

It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that once a man came to the Prophet's Mosque and began to pray. The Noble Prophet (peace and blessings be upon him) was in the mosque at that time. After completing his prayer, the man came to the service of the Noble Prophet (peace and blessings be upon him) and greeted him with salam. The Noble Prophet (peace and blessings be upon him) replied to the salam and said, "Go and pray again, for you have not prayed." He went back and prayed again, and this happened three times. After that, he said, "By Him Who has sent you with the truth, I cannot pray better than this, so please teach me." The Noble Prophet (peace and blessings be upon him) said, "When you stand for prayer, say the takbeer, then recite as much of the Qur'an as is easy for you, then bow with calmness, then stand up straight, then prostrate with calmness, then sit with calmness, and do this throughout your prayer."