Wa laa tahinoo fibtighaaa'il qawmi in takoonoo taalamoona fa innahum yaalamoona kamaa taalamoona wa tarjoona minal laahi maa laa yarjoon; wa kaanal laahu 'Aleeman Hakeemaa
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 Allah that which they expect not. And Allah is ever Knowing and Wise.
1 Mufti Taqi Usmani
Do not show weakness in pursuing these people. If you are suffering, they are suffering as you are suffering, while you hope from Allah what they do not hope. Allah is All-Knowing, All-Wise.