5ـ وَعَنْهُ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ قَالَ قُلْتُ لأَبِي الْحَسَنِ (عَلَيْهِ الْسَّلام) إِنَّ لَنَا رَطْبَةً وَأَرُزّاً فَمَا الَّذِي عَلَيْنَا فِيهَا فَقَالَ (عَلَيْهِ الْسَّلام) أَمَّا الرَّطْبَةُ فَلَيْسَ عَلَيْكَ فِيهَا شَيْءٌ وَأَمَّا الأرُزُّ فَمَا سَقَتِ السَّمَاءُ بِالْعُشْرِ وَمَا سُقِيَ بِالدَّلْوِ فَنِصْفُ الْعُشْرِ مِنْ كُلِّ مَا كِلْتَ بِالصَّاعِ أَوْ قَالَ وَكِيلَ بِالْمِكْيَالِ.
5. Humayd ibn Ziyad has narrated from Ahmad ibn Sama‘ah from those whom he has mentioned from Aban from abu Maryam who has said the foilowing: “I once asked abu ’Abd Allah (a.s.), about plantation and what is subject to Zakat from it. He (the Imam) said, ‘There is Zakat on wheat, barley, corn, rice, al-sult, and lintels and all of these are subject to Zakat.’ He (the Imam) said, ‘Everything that is measured by al-Sa‘ and amounts to al- Awsaq are subject to Zakat.’”