Surah Al-Anfal (The Spoils of War), Verse 60

وَاَعِدُّوْا لَهُمْ مَّا اسْتَطَعْتُمْ مِّنْ قُوَّةٍ وَّمِنْ رِّبَاطِ الْخَیْلِ تُرْهِبُوْنَ بِهٖ عَدُوَّ اللّٰهِ وَعَدُوَّكُمْ وَاٰخَرِیْنَ مِنْ دُوْنِهِمْ لَا تَعْلَمُوْنَهُمْ اَللّٰهُ یَعْلَمُهُمْ وَمَا تُنْفِقُوْا مِنْ شَیْءٍ فِیْ سَبِیْلِ اللّٰهِ یُوَفَّ اِلَیْكُمْ وَاَنْتُمْ لَا تُظْلَمُوْنَ ۟

Wa a'iddoo lahum mastata'tum min quwwatinw wa mirribaatil khaili turhiboona bihee 'aduwwal laahi wa 'aduwwakum wa aakhareena min doonihim laa ta'lamoo nahum Allaahu ya'lamuhum; wa maa tunfiqoo min shai'in fee sabeelil laahi yuwaffa ilaikum wa antum laa tuzlamoon

“Against them make ready your strength to the utmost of your power, including steeds of war, to strike terror into (the hearts of) the enemies, of Allah and your enemies, and others besides, whom ye may not know, but whom Allah doth know. Whatever ye shall spend in the cause of Allah, shall be repaid unto you, and ye shall not be treated unjustly.”

Quran 8:60 (Yusuf Ali Translation)