It is narrated that the above verse was sent down on the occasion of ABULABBABEH, for the detail of his fault and then repentance, please refer to volume 2 page 589, under the title of, ``A BEAUTIFUL PENITENCE¨¨.
True that the immediate reference here is to ABULABBABEH, but this is general, and applicable to all the believers who mingle good deeds with evil ones for their weakness in will, and lack of faith. They are given the promise of forgiveness, supposing they repent and amend their deeds and purify their souls so that they may deserve such forgiveness. As to the clause:ِ ``PERHAPS ALLAH MAY TURN TO THEM'' is meant to keep them in a state of hope and fear, which is an effective means of training, and purifying the soul of man.