the true believers are only those who accepted faith in allah and his noble messenger and then did not have any doubt and fought with their wealth and their lives in allahs way it is they who are the truthful.
إنما المؤمنون الذين آمنوا بالله ورسوله ثم لم يرتابوا وجاهدوا بأموالهم وأنفسهم في سبيل الله أولئك هم الصادقون