Sunan Abi Dawud 2974
سنن أبي داود#2974SahihNarrated Abu Hurairah: The Prophet (ﷺ) as saying: Do not distribute dinars among my heirs: Whatever I left after contribution to my wives and provisions for my governor is sadaqah (alms). Abu Dawud said: 'Amil means the workers or laborers on the land (i.e. peasants)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (3096) Sahih Muslim (1760)
In-book reference: 20:47