That’s right. I know a man who taught business ethics to Muslim students in a Muslim country. He said it was very hard because there is nothing in Islam or the Koran that deters lying or unethical behavior.
Why people ever believe Muslims or trust them at all is beyond me. A “religion” that teaches lying and murder as tenets seems pretty dangerous to me.
When I caught on to their curious views about the truth and the concept of honesty was when I spent some time in Morocco. Not only would they lie to your face, in the presence of evidence to the contrary, but they would steal you blind given half a chance. They were constantly attempting to short-change us, and we had to go over the hotel bill and restaurant bills with a fine-tooth comb to avoid being ripped off. Once they tried to charge the two of us for a dinner for 12, which we declined to pay, thinking we were too dumb to convert the currency. And Morocco is a relatively friendly and civilized place compared to some Arab countries. I actually enjoyed my time there, except for the constant realization that I was being cheated.