From Sahih Muslim (Hadith 2298):
Jabir b. 'Abdullah reported:There came people from among the Bedouins to the Messenger of Allah (ﷺ) and said: Collectors of Sadaqa come to us and treat us unjustly. Upon this the Messenger of Allah (ﷺ) said: Please your collectors. Jarir said: Ever since I heard it from the Messenger of Allah (ﷺ) no collector had departed but was pleased with me
Reference: Muslim 2298