And prepare against them what force you can and horses tied at the frontier, to frighten thereby the enemy of Allah and your enemy and others besides them, whom you do not know (but) Allah knows them; and whatever thing you will spend in Allah's way, it will be paid back to you fully and you shall not be dealt with unjustly.

He makes whom He pleases to enter into His mercy; and (as for) the unjust, He has prepared for them a painful chastisement.