٣- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادِ بْنِ عُثْمَانَ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ قَالَ لا يُبَاعُ مَخْتُومَانِ مِنْ شَعِيرٍ بِمَخْتُومٍ مِنْ حِنْطَةٍ وَلا يُبَاعُ إِلا مِثْلا بِمِثْلٍ وَالتَّمْرُ مِثْلُ ذَلِكَ قَالَ وَسُئِلَ عَنِ الرَّجُلِ يَشْتَرِي الْحِنْطَةَ فَلا يَجِدُ عِنْدَ صَاحِبِهَا إِلا شَعِيراً أَيَصْلُحُ لَهُ أَنْ يَأْخُذَ اثْنَيْنِ بِوَاحِدٍ قَالَ لا إِنَّمَا أَصْلُهُمَا وَاحِدٌ وَكَانَ عَلِيٌّ (عَلَيْهِ السَّلام) يَعُدُّ الشَّعِيرَ بِالْحِنْطَةِ.
3. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad ibn ‘Uthman from al-Halabiy who has said the following: “Abu ‘Abd Allah , has said, ‘It is not permissible to sell two Makhtum (a container) of barley for one Makhtum of wheat. These items cannot be exchanged except in equal quantities of each other and so also is the date.’ Abu ‘Abd Allah , was asked about the case of a man who buys wheat but cannot find with his party anything except barley, if he can take two for one. He (the Imam) said, ‘No, because the origin of the two is the same and Ali , would count barley for wheat.’” 