This verse is a complementary to the verse of JAHÄD, and this is because every fight requires as much veterans and expert and brave warriors, as it needs equipments and weapon, which is provided by wealth and money. What can a veteran and a brave soldier do in the field without having adequate weapon and arms? So, if the war is based on justice, and is for the cause of God, all the wealthies have to spend for it, in addition to their personal effects and endeavours, and so says the verse: ``Spend in the way of Allah, and cast not yourselves, by your own hands into perdition and destruction.''