Sahih Bukhari Volume 007, Book 072, Hadith Number 700.

Narrated By Anas bin Malik : Once I was walking with Allah's Apostle and he was wearing a Najram Burd with thick margin. A Bedouin followed him and pulled his Burd so violently that I noticed the side of the shoulder of Allah's Apostle affected by the margin of the Burd because of that violent pull. The Bedouin said, "O Muhammad! Give me some of Allah's wealth which is with you." Allah's Apostle turned and looked at him, and smiling, 'he ordered that he be given something.