Though they had assuredly pledged to God before that that they would not turn their backs to flee; and a pledge given to God must be answered for regarding whether it was fulfilled or not.
- 33:1515
وَلَقَدْ كَانُوا عَاهَدُوا اللَّهَ مِنْ قَبْلُ لَا يُوَلُّونَ الْأَدْبَارَ ۚ وَكَانَ عَهْدُ اللَّهِ مَسْئُولًا
And indeed before this they had agreed with Allah that they would not turn their backs; and the covenant of Allah will be questioned about.
- common.revelation-Medinan
- common.hizb : 167