وَتَرَكْنَا فِيهَا آيَةً لِّلَّذِينَ يَخَافُونَ الْعَذَابَ الْأَلِيمَ
[51:37]
And We left therein a sign for those who fear the painful punishment.
And We left there a Sign for such as fear the Grievous Penalty.
And We left behind therein a portent for those who fear a painful doom.