16:91
An-Nahl 91
Surah An-Nahl (النحل), verse 91 — reference 16:91. Arabic text with optional translation and free audio on Al-Qalam.
وَأَوْفُوا۟ بِعَهْدِ ٱللَّهِ إِذَا عَـٰهَدتُّمْ وَلَا تَنقُضُوا۟ ٱلْأَيْمَـٰنَ بَعْدَ تَوْكِيدِهَا وَقَدْ جَعَلْتُمُ ٱللَّهَ عَلَيْكُمْ كَفِيلًا ۚ إِنَّ ٱللَّهَ يَعْلَمُ مَا تَفْعَلُونَ
wa-awfū biʿahdi l-lahi idhā ʿāhadttum walā tanquḍū l-aymāna baʿda tawkīdihā waqad jaʿaltumu l-laha ʿalaykum kafīlan inna l-laha yaʿlamu mā tafʿalūna
And fulfill the covenant of Allāh when you have taken it, [O believers], and do not break oaths after their confirmation while you have made Allāh, over you, a security [i.e., witness]. Indeed, Allāh knows what you do.