Ibn Sa'd محمد بن سعد البغدادي · The Book of Zakat

'Umar b. Khattab (Allah be pleased with him) appointed me as a collector of Sadaqa. When I had finished that (the task assigned to me) and I handed over that to him (to 'Umar), he commanded me to (accept) some remuneration (for the work). I said: I performed this duty for Allah and my reward is with Allah. He said: Take whatever has been given to you, for I also performed this duty during the time of the Messenger of…

'Umar b. Khattab (Allah be pleased with him) appointed me as a collector of Sadaqat. The rest of the hadith in the same.