Kutiba alaikumulqitaalu wa huwa kurhullakum wa 'asaaa an takrahoo shai'anw wa huwa khairullakum wa 'asaaa an tuhibbo shai'anw wa huwa sharrullakum; wallaahu ya'lamu wa antum laa ta'lamoon (al-Baq̈arah 2:216)
Battle has been enjoined upon you while it is hateful to you. But perhaps you hate a thing and it is good for you; and perhaps you love a thing and it is bad for you. And Allah knows, while you know not. (Al-Baqarah [2] : 216)