 norm or a canon law, but I would say yes. Because there is a moral principle that we were taught in moral theology, nemo dat quod non hobbit, which of course all of you know what that means in Latin. No one can give what he has not got. In other words, if you're in a state of mortal sin and cannot receive the Holy Eucharist worthily, you shouldn't be up there giving out the Blessed Sacrament.