Al-Mukhtasar
إِنَّآ أَخْلَصْنَـٰهُم بِخَالِصَةٍ ذِكْرَى ٱلدَّارِ ﴿٤٦﴾
I favoured them with a special favour I chose them with, which was filling their hearts with the remembrance of the abode of the Afterlife, preparing for it through good actions and calling people towards acting for it.