Sunan Abi Dawud 3085
سنن أبي داود#3085SahihNarrated AbuHurayrah: The Prophet (ﷺ) said: A fifth is payable on buried treasure
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
Zubair Ali ZaiSahih Bukhari (1499) Sahih Muslim (1710)
In-book reference: 20:158