Sunan Abi Dawud 1596
سنن أبي داود#1596Sahihحَدَّثَنَا هَارُونُ بْنُ سَعِيدِ بْنِ الْهَيْثَمِ الأَيْلِيُّ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ بْنُ يَزِيدَ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " فِيمَا سَقَتِ السَّمَاءُ وَالأَنْهَارُ وَالْعُيُونُ أَوْ كَانَ بَعْلاً الْعُشْرُ وَفِيمَا سُقِيَ بِالسَّوَانِي أَوِ النَّضْحِ نِصْفُ الْعُشْرِ " .
Narrated ‘Abdallah bin Umar :The Messenger of Allah(ﷺ) as saying A tenth is payable on what is watered by rain or rivers or brooks or from underground moisture and a twentieth on what is watered by draught camels
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 9:41