Surat Aal-i-Imraan (The Family of Imraan) - آل عمران

وَإِذْ غَدَوْتَ مِنْ أَهْلِكَ تُبَوِّئُ ٱلْمُؤْمِنِينَ مَقَٰعِدَ لِلْقِتَالِ وَٱللَّهُ سَمِيعٌ عَلِيمٌ ﴿١٢١﴾ إِذْ هَمَّت طَّآئِفَتَانِ مِنكُمْ أَن تَفْشَلَا وَٱللَّهُ وَلِيُّهُمَا وَعَلَى ٱللَّهِ فَلْيَتَوَكَّلِ ٱلْمُؤْمِنُونَ﴿١٢٢﴾

And when you did go forth early in the morning from your family to lodge the believers in encampments for war and Allah is Hearing, Knowing. When two parties from among you had determined that they should show cowardice, and Allah was the guardian of them both, and in Allah should the believers trust.