﴿ وَقَالُوٓا۟ إِنْ هِىَ إِلَّا حَيَاتُنَا ٱلدُّنْيَا وَمَا نَحْنُ بِمَبْعُوثِينَ ﴾

“And some [of the unbelievers] say, "There is nothing beyond our life in this world, for We shall not be raised from the dead."”

Please check ayah 6:30 for complete tafsir.