। ॥ ३ ॥
In plain words
It is that one — the reflection — that keeps circling through this world and the next, endlessly, pushed along by karma. So sift pure Bodha — pure consciousness — out from the reflection of Bodha, and put everything you have into the sifting.
Close to the Sanskrit
He alone would transmigrate, by force of karma, in the two worlds, always; from reflected Bodha — reflected consciousness — one should discriminate pure Bodha — pure consciousness — with the utmost effort.