Whether indulgences can be granted by one who is in mortal sin?

❌ Objection 1 : It would seem that indulgences cannot be granted by one who is in mortal sin. For a stream can no longer flow if cut off from its source. Now the source of grace which is the Holy Ghost is cut off from one who is in mortal sin. Therefore such a one can convey nothing to others by granting indulgences.

❌ Objection 2 : Further, it is a greater thing to grant an indulgence than to receive one. But one who is in mortal sin cannot receive an indulgence, as we shall show presently (Question [27], Article [1]). Neither, therefore, can he grant one.