33:15
وَلَقَدْ كَانُوا۟ عَـٰهَدُوا۟ ٱللَّهَ مِن قَبْلُ لَا يُوَلُّونَ ٱلْأَدْبَـٰرَ ۚ وَكَانَ عَهْدُ ٱللَّهِ مَسْـُٔولًا
walaqad kānū ʿāhadū l-laha min qablu lā yuwallūna l-adbāra wakāna ʿahdu l-lahi masūlan
And they had already promised Allāh before not to turn their backs [i.e., flee]. And ever is the promise to Allāh [that about which one will be] questioned.
— Saheeh International
Yet they had already promised God that they would not turn tail and flee, and a promise to God will be answered for.
— M. A. S. Abdel Haleem
And indeed they had already made a covenant with Allâh not to turn their backs, and a covenant with Allâh must be answered for.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali

