al-Zumar

وَوُفِّيَتْ كُلُّ نَفْسٍ مَا عَمِلَتْ وَهُوَ أَعْلَمُ بِمَا يَفْعَلُونَ

70. And each person shall be paid in full of what he did and He is Best Aware of what they do.

Divine Chastisement and Reward shall be paid in full. The sixth clause that completes the foregoing discussion is to be found in the blessed Verse in question:

It is neither the Chastisement nor the Reward of the deeds which shall be given to man but the deeds themselves. It shall be the best Chastisement and the best Reward that they shall be paid in full and they shall accompany man at all times. Who is able to administer justice so precisely but One Whose Knowledge encompasses everything. Thus, the seventh and the last clause says:

There is even no need for witnesses, since His Omniscience far exceeds all witnesses. Yet, Divine Favor and Justice require the presence of witnesses. This is the Day of Resurrection for which we have to prepare ourselves.