سَمِعْتُ أَمِيرَ الْمُؤْمِنِينَ ع يَقُولُ عَلَى الْمِنْبَرِ يَا مَعْشَرَ التُّجَّارِ الْفِقْهَ ثُمَّ الْمَتْجَرَ الْفِقْهَ ثُمَّ الْمَتْجَرَ الْفِقْهَ ثُمَّ الْمَتْجَرَ وَ اللَّهِ لَلرِّبَا فِي هَذِهِ الْأُمَّةِ أَخْفَى مِنْ دَبِيبِ النَّمْلِ عَلَى الصَّفَا شُوبُوا أَيْمَانَكُمْ بِالصِّدْقِ التَّاجِرُ فَاجِرٌ وَ الْفَاجِرُ فِي النَّارِ إِلَّا مَنْ أَخَذَ الْحَقَّ وَ أَعْطَى الْحَقَّ.
“I heard Amir al-Mu’minin (a.s.), saying from the pulpit, ‘O people who do business, you must learn fiqh (laws), then go in business, you must learn fiqh (laws) then go in business, you must learn fiqh (laws) then go in business. I swear by Allah, Riba ’ creeps in this nation more quietly than an ant’s moving on a hard