Laa yastaazinukal lazeena yu'minoona billaahi wal Yawmil Aakhiri ai yujaa hidoo bi amwaalihim wa anfusihim; wallaahu 'aleemum bilmut taqeen
They do not ask leave of you who believe in Allah and the latter day (to stay away) from striving hard with their property and their persons, and Allah knows those who guard (against evil).