US-P18.204ab ।US-P18.204cd ॥
In plain words
Suppose you say: it will be accomplished later. If that is so, then hearing and reflection and meditation are what produce it — and liberation turns out to be non-eternal. Take the statement any other way, and it contradicts itself.
Close to the Sanskrit
If [it be said] 'it will be accomplished' — if that be so, then hearing and the rest would be [productive of it]; thus the non-eternality of liberation would follow; taken otherwise, the statement is simply contradictory.