Surah Al-Hujurat (The Private Quarters), Verse 15

اِنَّمَا الْمُؤْمِنُوْنَ الَّذِیْنَ اٰمَنُوْا بِاللّٰهِ وَرَسُوْلِهٖ ثُمَّ لَمْ یَرْتَابُوْا وَجٰهَدُوْا بِاَمْوَالِهِمْ وَاَنْفُسِهِمْ فِیْ سَبِیْلِ اللّٰهِ اُولٰٓىِٕكَ هُمُ الصّٰدِقُوْنَ ۟

Innamal muu'minoonal lazeena aamanoo billaahi wa Rasoolihee summa lam yartaaboo wa jaahadoo biamwaalihim wa anfusihim fee sabeelil laah; ulaaaika humus saadiqoon

“Only those are Believers who have believed in Allah and His Messenger, and have never since doubted, but have striven with their belongings and their persons in the Cause of Allah: Such are the sincere ones.”

Quran 49:15 (Yusuf Ali Translation)