Sahih Muslim — The Book of Zakat — Hadith No: 2403
Translation
Malik al-Ashja'i reported:We, nine, eight or seven men, were in the company of the Messenger of Allah (ﷺ) and he said: Why don't you pledge allegiance to the Messenger of Allah? -while we had recently pledged allegiance. So we said: Messenger of Allah, we have already pledged allegiance to you. He again said: Why don't you pledge allegiance to the Messenger of Allah? And we said: Messenger of Allah, we have already pledged allegiance to you. He again said: Why don't you pledge allegiance to the Messenger of Allah? We stretched our hands and said: Messenger of Allah. we have already pledged allegiance to you. Now tell (on what things) should we pledge allegiance to you. He said I (You must pledge allegiance) that you would worship Allah only and would not associate with Him anything, (and observe) five prayers, and obey- (and he said onething in an undertone) -that you would not beg people of anything. (And as a consequence of that) I saw that some of these people did not ask anyone to pick up the whip for them if it fell down