US-P18.205ab ।US-P18.205cd ॥
In plain words
If you accept a real difference between the hearer and what is to be heard, this is what follows — and what follows destroys the very position you accepted. The statement will not hold, on any reading at all.
Close to the Sanskrit
If a difference between the hearer and that which is to be heard were accepted, this would follow; thus there would be a vitiation of the very position accepted. The statement is in no way tenable.