Surah Al-Baqarah, Verse 66

فَجَعَلۡنَٰهَا نَكَٰلٗا لِّمَا بَيۡنَ يَدَيۡهَا وَمَا خَلۡفَهَا وَمَوۡعِظَةٗ لِّلۡمُتَّقِينَ٦٦

fajaʿalnāhā nakālan limā bayna yadayhā wamā khalfahā wamawʿiẓatan lil'muttaqīna

And We made it a deterrent punishment for those who were present and those who succeeded [them] and a lesson for those who fear Allāh.