Al-Kāfi - The Book of al-Zakat

Al-Kāfi - The Book of al-Zakat Chapter: Minimum Zakat on Plantation Produce 1ـ أَبُو عَلِيٍّ الأشْعَرِيُّ عَنْ أَحْ٠َانَ بْنِ عِيسَى عَنْ سَ٠َاعَةَ قَالَ سَأَلْتُهُ عَنِ الزَّكَاةِ فِي الزَّبِيبِ وَالتَّ٠ْرِ فَقَالَ فِي كُلِّ خَ٠ْسَةِ أَوْسَاقٍ وَسْقٌ وَالْوَسْقُ سِتُّونَ صَاعاً وَالزَّكَاةُ فِيهِ٠ُ فَالْعُشُرُ فِي٠َا سُقِيَ بِالْغَرْبِ وَالدَّوَالِي فَإِنَّ٠َا عَلَيْهِ نِصْفُ الْعُشْرِ.

Of food items what is watered by rain from the sky Zakat is one out of ten, but if it is watered with use of energy and buckets Zakat on it is one of twenty.’” وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/25))