Allah then explained the traits of those who are true in their faith, saying: (The (true) believers) who are sincere in their faith (are those only who believe in Allah and His messenger and afterward doubt not) in their faith, (but strive with their wealth and their lives for the cause of Allah) in obedience to Allah. (Such are the sincere) who are true in their faith and striving.
- 49:1515
إِنَّمَا الْمُؤْمِنُونَ الَّذِينَ آمَنُوا بِاللَّهِ وَرَسُولِهِ ثُمَّ لَمْ يَرْتَابُوا وَجَاهَدُوا بِأَمْوَالِهِمْ وَأَنْفُسِهِمْ فِي سَبِيلِ اللَّهِ ۚ أُولَٰئِكَ هُمُ الصَّادِقُونَ
They alone are believers who come to believe in God and His Apostle, then never doubt again, and struggle wealth and soul in the way of God. They are the truthful and sincere.
- common.revelation-Medinan
- common.hizb : 207