8. Considering the above, We ask: when letters of matrimonial dispensation are conceived in such words and sent in that way, if later it is learned that the contracting parties are heretics, or one of them is Catholic and the other heretic, and nevertheless the dispensation is executed, whose fault is it and who can be accused of issuing an improper dispensation? Is it he who in good faith has granted it after applying opportune safeguards and adding legitimate conditions; or is it not rather he who, without regard for such conditions and with no previous examination of the contracting parties, executes the dispensation and permits it to have an undue effect contrary to the will of the one granting it?