According to Islamic law (Shariah), Muslims had to do business according to Islamic rules, and if they wanted to arbitrate a conflict, they had to use an Islamic court. For their part, Christians and Jews could do business underneath their possess rules, yet they were giveaway also to follow Islamic manners and to use Islamic courts, if they so desired. But, of course, if they were concerned in a box opposite a Muslim, that had to be rubbed in an Islamic court.
When a Muslim and a non-Muslim faced any other in a trial, a Muslim enjoyed poignant advantages.
Second, a justice staff was wholly Muslim, that meant that testimony was noticed usually from a Muslim perspective. Third, since Muslims could attest opposite anyone, Christians and Jews could attest usually opposite another non-Muslim.
To simulate differences in viewed risk, lenders, who were primarily Muslim, charged about dual commission points reduction for credit to Christian and Jewish borrowers than to Muslims (15 percent annually, as against to 17 percent).
As a result, few Middle Eastern Muslims have personal knowledge doing business with non-Muslims.
Islamic law so enervated a Muslim communities they were meant to protect.
Article source: http://www.dailystar.com.lb//Opinion/Commentary/2016/Jul-12/361552-the-roots-of-middle-east-mistrust.ashx