Al-Ahzab (The Armies of Enemies)

Surah 33 · Verse 15

they had indeed made an agreement with Allah earlier, that they would not turn their backs, and (they) will be questioned regarding (the fulfillment of their) agreement with Allah.

وَلَقَدْ كَانُوا عَاهَدُوا اللَّهَ مِنْ قَبْلُ لَا يُوَلُّونَ الْأَدْبَارَ ۚ وَكَانَ عَهْدُ اللَّهِ مَسْئُولًا