Selections from The Sayings and Preaching of Amir al-Muminin Ali ibn Abi Talib (Peace Be Upon Him) Including His Replies to Questions and Maxims Expressed for Various Purposes.Translated by Sayyid Ali Reza
وَقَالَ (عليه السلام):
Amir al-mu'minin, peace be upon him, said:
مَنِ اتَّجَرَ بِغَيْرِ فِقْهٍ
Whoever trades without knowing the rules of religious law
ارْتَطَمَ فِي الرِّبَا.
will be involved in usury.
