An-Nisa · 4:104

104. Do not become weak and lazy, O believers, in pursuing your disbelieving enemy. If you are suffering pain because of the killing and injury that afflicts you, then they too are suffering the same pain as well. So do not let their patience be greater than yours, because you have hope of reward, help and support from Allah, which they cannot hope for. Allah knows the conditions of His servants and is Wise in His planning and legislation.