١ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ خَالِدٍ الْبَرْقِيِّ قَالَ كَتَبْتُ إِلَى أَبِي جَعْفَرٍ الثَّانِي (عَلَيْهِ الْسَّلام) هَلْ يَجُوزُ أَنْ يُخْرَجَ عَمَّا يَجِبُ فِي الْحَرْثِ مِنَ الْحِنْطَةِ وَالشَّعِيرِ وَمَا يَجِبُ عَلَى الذَّهَبِ دَرَاهِمُ بِقِيمَةِ مَا يَسْوَى أَمْ لاَ يَجُوزُ إِلاَّ أَنْ يُخْرَجَ مِنْ كُلِّ شَيْ‏ءٍ مَا فِيهِ فَأَجَابَ (عَلَيْهِ الْسَّلام) أَيُّمَا تَيَسَّرَ يُخْرَجُ.
1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn Khalid al-Barqiy who has said the following: “I once wrote to abu al-Hassan, al-Thaniy, ‘Alayhi al-Salam, and asked him (the Imam) if it is permissible to pay Zakat which is due on grains, like wheat and barley and on gold by means of dirham in equal value or is it necessary to pay from the same substance on which Zakat is due? He (the Imam) answered, ‘Whichever is available can be paid as Zakat.”’ 