Surah Al-Baqarah, Verse 100

أَوَكُلَّمَا عَٰهَدُواْ عَهۡدٗا نَّبَذَهُۥ فَرِيقٞ مِّنۡهُمۚ بَلۡ أَكۡثَرُهُمۡ لَا يُؤۡمِنُونَ١٠٠

awakullamā ʿāhadū ʿahdan nabadhahu farīqun min'hum bal aktharuhum lā yu'minūna

Is it not [true] that every time they took a covenant a party of them threw it away? But, [in fact], most of them do not believe.