US-P18.116ab ।US-P18.116cd ॥
In plain words
If the witness is established as separate, then the reflection belongs to it; yet if the reflection truly belongs to it, it is found to be distinct from the witness after all.
Close to the Sanskrit
Upon the separate establishment of the witness, there is the belongingness of the reflection to it; and if the reflection belongs to it, indeed there is distinctness from the witness.