the believers are only those who believed in allah and his apostle and thereafter doubted not and strave with their riches and their persons in 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