And Qutaybah ibn Sa'id narrated to us, saying: Layth narrated to us. And (in another chain) Qutaybah said: Bakr—meaning Ibn Mudar—narrated to us. Both of them (narrated) from Ibn al-Had, from Muhammad ibn Ibrahim, from Abu Salamah ibn 'Abd al-Rahman, from Abu Hurayrah, that the Messenger of Allah, peace and blessings be upon him, said—and in the hadith of Bakr (it is stated) that he heard the Messenger of Allah, peace and blessings be upon him, say: "Do you see that if a river flowed at the door of one of you, and he bathed in it five times every day, would any of his dirt remain?" They said, "Nothing of his dirt would remain." He said, "That is the likeness of the five prayers, by which Allah erases sins."