for, verily, We purified them by means of a thought most pure: the remembrance of the life to come.

Verily We did choose them for a special (purpose)- proclaiming the Message of the Hereafter.

Lo! We purified them with a pure thought, remembrance of the Home (of the Hereafter).

We indeed purified them by a pure quality, the keeping in mind of the (final) abode.

Indeed, We chose them for an exclusive quality: remembrance of the home [of the Hereafter].