Surah Al-Ahzab (الأحزاب) Ayah 15 - Tafsir

وَلَقَدْ كَانُوا۟ عَٰهَدُوا۟ ٱللَّهَ مِن قَبْلُ لَا يُوَلُّونَ ٱلْأَدْبَٰرَ ۚ وَكَانَ عَهْدُ ٱللَّهِ مَسْـُٔولًۭا

"And they had already promised Allah before not to turn their backs and flee. And ever is the promise to Allah [that about which one will be] questioned."