سنن أبي داود

Anas b. Malik reported : A man entered the mosque on camel and made it kneel down, and then tied his leg with rope. He then asked: Who among you is Muhammad? The Messenger of Allah (May peace be upon him) was sitting leaning upon something among them. We said to him: This white (man) who is leaning. The man said: O son of ‘Abd al-Muttalib. The Prophet (peace be upon him) said; I already responded to you. The man (again) said: O Muhammad. I am asking you. The narrator then narrated the rest of the tradition.