Sunan Abi Dawud 1597
سنن أبي داود#1597SahihNarrated Jabir bin ‘Abdallah :The Messenger of Allah(ﷺ) as saying A tenth is payable on what is watered by rivers and brooks or from underground moisture and a twentieth on what is watered by draught camels
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 Muslim (981)
In-book reference: 9:42