Hadith 5:283
Muhammad ibn Bakr narrated to us, from Ibn Jurayj, who said: Musa ibn Uqbah informed me, from Nafi’, from Ibn Umar, that he used to say: Regarding the charity of fruits and crops, and whatever there is of date palms or crops of wheat, barley, or *sult* (a type of barley) that is *ba’l* (naturally irrigated by groundwater), or irrigated by a river, or irrigated by a spring, or *athari* (irrigated by rain)—in that is a tenth (1/10); for every ten, one. And whatever of it is irrigated by *nadḥ* (drawing water by animal/machine), in that is half a tenth (1/20); for every twenty, one. And the Prophet, may Allah bless him and grant him peace, wrote to the people of Yemen, to al-Harith ibn ‘Abd Kulal and those with him from the people of Yemen, from Ma’afir and Hamdan, that upon the believers, from the charity of their wealth, is a tenth of what is irrigated by springs and what is irrigated by the sky (rain), and upon what is irrigated by the *gharb* (large bucket drawn by animals), is half a tenth.
حدثنا محمد بن بكر عن بن جريج قال أخبرني موسى بن عقبة عن نافع عن بن عمر أنه كان يقول صدقة الثمار والزرع وما كان من نخل أو زرع من حنطة أو شعير أو سلت مما كان بعلا أو يسقي بنهر أو يسقي بالعين أو عثريا ما يسقي بالمطر ففيه العشر من كل عشرة واحد وما كان منه يسقى بالنضح ففيه نصف العشر وفي كل عشرين واحد وكتب النبي صلى الله عليه وسلم إلى أهل اليمن إلى الحارث بن عبد كلال ومن معه من أهل اليمن من معافر وهمدان أن على المؤمنين من صدقة أموالهم عشور ما سقت العين وسقت السماء العشر وعلى ما يسقى بالغرب نصف العشر