the faithful are only those who have attained faith in allah and his apostle and then have never doubted and who wage jihad with their possessions and their persons in the way of allah. 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