Surah Az-Zukhruf, ayah 50

43:50

فَلَمَّا كَشَفۡنَا عَنۡهُمُ ٱلۡعَذَابَ إِذَا هُمۡ يَنكُثُونَ ٥٠

Falammā kashafnā 'anhumul-'adhāba idhā hum yankuthūn

But when We removed from them the affliction, at once they broke their word.