51:37
وَتَرَكْنَا فِيهَآ ءَايَةً لِّلَّذِينَ يَخَافُونَ ٱلْعَذَابَ ٱلْأَلِيمَ
wataraknā fīhā āyatan lilladhīna yakhāfūna l-ʿadhāba l-alīma
and left the town to be a sign for those who fear the painful punishment.
And We have left there a sign (i.e. the place of the Dead Sea in Palestine) for those who fear the painful torment.