How many imams are there?
How many can be shown to have condoned it?
Because depending on the answer we may have a serious problem (very unlikely), a limited problem (unlikely) or the kind of small number nutter fringe that infests most religions/large-scale movements (very likely).
No point getting knickers in a twists until we know which it is.
And yes, I know even one person advocating this is one too many, but that's not how the thread has been put.