Al-Anfal 8:60

وَأَعِدُّواْ لَهُم مَّا ٱسۡتَطَعۡتُم مِّن قُوَّةٖ وَمِن رِّبَاطِ ٱلۡخَيۡلِ تُرۡهِبُونَ بِهِۦ عَدُوَّ ٱللَّهِ وَعَدُوَّكُمۡ وَءَاخَرِينَ مِن دُونِهِمۡ لَا تَعۡلَمُونَهُمُ ٱللَّهُ يَعۡلَمُهُمۡۚ وَمَا تُنفِقُواْ مِن شَيۡءٖ فِي سَبِيلِ ٱللَّهِ يُوَفَّ إِلَيۡكُمۡ وَأَنتُمۡ لَا تُظۡلَمُونَ 60

And prepare against them whatever you are able of power and of steeds of war by which you may terrify the enemy of Allah and your enemy and others besides them whom you do not know [but] whom Allah knows. And whatever you spend in the cause of Allah will be fully repaid to you, and you will not be wronged