Al-Anfal · 8:60

60. Prepare, O believers, whatever numbers and war equipment you are able to, including keeping trained horses to be used in Allah’s path, so you can frighten Allah’s enemies and your enemies from among the disbelievers who are eagerly waiting for you to be afflicted with a disaster. You can also frighten others whom you do not know of and whose hidden hatred you are not aware of. Allah alone knows them and He knows what they keep hidden inside themselves. Any wealth you spend, whether a little or much, Allah will replace it for you in this world and will give you the reward for it in full in the Afterlife without any reduction. So hurry towards spending in His path.