And when they [i.e., those advised] forgot that by which they had been reminded, We saved those who had forbidden evil and seized those who wronged, with a wretched punishment, because they were defiantly disobeying.
When the wrongdoers turned away from what those who advised them had reminded them of, and they would not give up their disobedience, Allah saved the group which had forbidden disobedience from the punishment, and afflicted those who transgressed the limits by fishing on the Saturday with a firm punishment, because they were not obedient to Allah and persisted in their rebellion.