Sahih Muslim
The Book of Zakat (Kitab Al-Zakat)
Book Number: 005 / Hadith Number: 2168
Jabir b. 'Abdullah reported: There came people from among the Bedouins to the Messenger of Allah (may peace be upon him) and said: Collectors of Sadaqa come to us and treat us unjustly. Upon this the Messenger of Allah (may peace be upon him) said: Please your collectors. Jarir said: Ever since I heard it from the Messenger of Allah (may peace be upon him) no collector had departed but was pleased with me.