Surah An-Nisa, Verse 104

وَلَا تَهِنُواْ فِي ٱبۡتِغَآءِ ٱلۡقَوۡمِۖ إِن تَكُونُواْ تَأۡلَمُونَ فَإِنَّهُمۡ يَأۡلَمُونَ كَمَا تَأۡلَمُونَۖ وَتَرۡجُونَ مِنَ ٱللَّهِ مَا لَا يَرۡجُونَۗ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًا١٠٤

walā tahinū fī ib'tighāi l-qawmi in takūnū talamūna fa-innahum yalamūna kamā talamūna watarjūna mina l-lahi mā lā yarjūna wakāna l-lahu ʿalīman ḥakīman

And do not weaken in pursuit of the enemy. If you should be suffering - so are they suffering as you are suffering, but you expect from Allāh that which they expect not. And Allāh is ever Knowing and Wise.