٤ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادِ بْنِ عِيسَى عَنْ حَرِيزٍ عَنْ زُرَارَةَ وَمُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ وَأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) أَنَّهُمَا سُئِلاَ عَمَّا فِي الرَّقِيقِ فَقَالاَ لَيْسَ فِي الرَّأْسِ شَيْ‏ءٌ أَكْثَرُ مِنْ صَاعٍ مِنْ تَمْرٍ إِذَا حَالَ عَلَيْهِ الْحَوْلُ وَلَيْسَ فِي ثَمَنِهِ شَيْ‏ءٌ حَتَّى يَحُولَ عَلَيْهِ الْحَوْلُ.
4. Ali ibn Ibrahim has narrated from his father from Hammad ibn ‘Isa from Hariz from Zurarah and Muhammad ibn Muslim who has said the following: “They asked abu Ja‘far and abu ‘Abd Allah, ‘Alayhim al-Salam, about slaves. They (the two Imam), ‘Alayhim al-Salam, said, ‘Zakat which is more than one Sa’ of date is not due per-head, when one year passes. There is nothing on what is paid as his price unless he has remained in one’s possession for one year.’” 