Muslims are prohibited to deal with interest with anyone, Jews or anyone else. So no, it was not outsourced to them. If Jews were allowed to lend money with int

Muslims are prohibited to deal with interest with anyone, Jews or anyone else. So no, it was not outsourced to them. If Jews were allowed to lend money with interest to non-Muslims, that's a separate topic altogether. Muslims still had to work in the economy and run businesses, and it was a Muslims majority land, so a few Jews lending money with interest is not going to affect the overall economy which is not based on interest.