Surah Al-Jaathiya, Verse 24
وَقَالُوا۟ مَا هِىَ إِلَّا حَيَاتُنَا ٱلدُّنْيَا نَمُوتُ وَنَحْيَا وَمَا يُهْلِكُنَآ إِلَّا ٱلدَّهْرُ ۚ وَمَا لَهُم بِذَٰلِكَ مِنْ عِلْمٍ ۖ إِنْ هُمْ إِلَّا يَظُنُّونَ
Translation — Sahih International
And they say, "There is not but our worldly life; we die and live, and nothing destroys us except time." And they have of that no knowledge; they are only assuming.
Source
Kur'an-ı Kerim, Câsiye Suresi 45:24
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/45-suresi-24-ayet