Mishkat al-Masabih
‘Abdallah b. ‘Umar reported the Prophet (ﷺ) as saying, “A tenth is payable on what is watered by rain or wells, or from underground moisture, and a twentieth on what is watered by draught camels.” Bukhari transmitted it.
وَعَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «فِيمَا سَقَتِ السَّمَاءُ وَالْعُيُونُ أَوْ كَانَ عَثَرِيًّا الْعُشْرُ. وَمَا سقِِي بالنضح نصف الْعشْر» . رَوَاهُ البُخَارِيّ
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