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.
إنما المؤمنون الذين آمنوا بالله ورسوله ثم لم يرتابوا وجاهدوا بأموالهم وأنفسهم في سبيل الله أولئك هم الصادقون