13فَإِن أَعرَضوا فَقُل أَنذَرتُكُم صاعِقَةً مِثلَ صاعِقَةِ عادٍ وَثَمودَWahiduddin KhanIf they turn away, then say, "I warn you of a lightning-bolt like the one which struck the 'Ad and the Thamud: