only those are the believers who have believed in allah and his messenger and afterward doubt not but strive with their wealth and their lives for the cause of allah. those! they are the truthful.
إنما المؤمنون الذين آمنوا بالله ورسوله ثم لم يرتابوا وجاهدوا بأموالهم وأنفسهم في سبيل الله أولئك هم الصادقون