وَأَوۡفُواْ بِعَهۡدِ ٱللَّهِ إِذَا عَٰهَدتُّمۡ وَلَا تَنقُضُواْ ٱلۡأَيۡمَٰنَ بَعۡدَ تَوۡكِيدِهَا وَقَدۡ جَعَلۡتُمُ ٱللَّهَ عَلَيۡكُمۡ كَفِيلًاۚ إِنَّ ٱللَّهَ يَعۡلَمُ مَا تَفۡعَلُونَ

Wa awfoo bi Ahdil laahi izaa 'aahattum wa laa tanqudul aimaana ba'da tawkeedihaa wa qad ja'altumul laaha 'alaikum kafeelaa; innal laaha ya'lamu maa taf'aloon

Fulfil the Covenant of Allah when ye have entered into it, and break not your oaths after ye have confirmed them; indeed ye have made Allah your surety; for Allah knoweth all that ye do.

— Al-Nahl (ٱلنَّحْل), 16:91