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.
قَالَ رَسُولُ اللَّهِ ﷺ فِيمَا سَقَتِ السَّمَاءُ وَالأَنْهَارُ وَالْعُيُونُ أَوْ كَانَ بَعْلاً الْعُشْرُ وَفِيمَا سُقِيَ بِالسَّوَانِي أَوِ النَّضْحِ نِصْفُ الْعُشْرِ