Do they not see how many of the generations We have destroyed before them? Verily, they will not return to them.meaning, `do you not learn a lesson from those whom Allah destroyed before you of those who disbelieved in the Messengers? They came to this world only once, and will not return to it.'It is not as many of those ignorant and immoral people claim that إِنْ هِيَ إِلاَّ حَيَاتُنَا الدُّنْيَا نَمُوتُ وَنَحْيَا ("There is nothing but our life of this world! We die and we live!") (23:37). This was the belief in the cycle of reincarnation; in their ignorance they believed that they would come back to this world as they had been before. But Allah refuted their false belief and said:أَلَمْ يَرَوْا كَمْ أَهْلَكْنَا قَبْلَهُم مِّنْ الْقُرُونِ أَنَّهُمْ إِلَيْهِمْ لَا يَرْجِعُونَ (Do they not see how many of the generations We have destroyed before them Verily, they will not return to them).Allah's saying:وَإِن كُلٌّ لَّمَّا جَمِيعٌ لَّدَيْنَا مُحْضَرُونَ