13فَإِن أَعرَضوا فَقُل أَنذَرتُكُم صاعِقَةً مِثلَ صاعِقَةِ عادٍ وَثَمودَAisha BewleyIf they turn away, then say, ‘I warn you of a lightning-bolt like the lightning-bolt of ‘Ad and of Thamud.’