It is narrated from Hazrat Abu Burdah that the Messenger of Allah, peace and blessings be upon him, said: Whenever I perform a prayer, I believe that it has become an expiation for all the deeds up to the previous prayer.

Hazrat Abdullah says that people commit sins and then perform the Zuhr prayer, so their sins are washed away. Then they commit sins and perform the Asr prayer, so their sins are washed away. Then they commit sins and perform the Maghrib prayer, so their sins are washed away. In this way, he mentioned all five prayers.

It is narrated similarly through another chain.

It is narrated from Hazrat Ubaid bin Umair that the Messenger of Allah, peace and blessings be upon him, said: The example of the five prayers is like that of a deep river flowing at someone's door, and he bathes in it every day. Will there remain any dirt on his body?