﴿ وَقَالُوا۟ مَا هِىَ إِلَّا حَيَاتُنَا ٱلدُّنْيَا نَمُوتُ وَنَحْيَا وَمَا يُهْلِكُنَآ إِلَّا ٱلدَّهْرُ ۚ وَمَا لَهُم بِذَٰلِكَ مِنْ عِلْمٍ ۖ إِنْ هُمْ إِلَّا يَظُنُّونَ ﴾

“And yet they say: “There is nothing beyond our life in this world. We die as we come to life, and nothing but time destroys us.” But of this they have no knowledge whatever: they do nothing but guess.”

Please check ayah 45:26 for complete tafsir.