Quran 2:66 from Surah Al-Baqara on Divine Marvels.
فَجَعَلۡنَٰهَا نَكَٰلٗا لِّمَا بَيۡنَ يَدَيۡهَا وَمَا خَلۡفَهَا وَمَوۡعِظَةٗ لِّلۡمُتَّقِينَ
English translation: So We made it a deterrent punishment for those (in) front (of) them and those after them and an admonition for those who fear (Allah)
Transliteration: faja'alnaha nakalan lima bayna yadayha wama khalfaha wamaw'izatan lil'muttaqina