Belief
But those among them who are firm in knowledge and faith, who believe in what was revealed to you, these will receive a great reward.
4:162But those of them who are firm in knowledge and the believers believe in that which is revealed unto thee, and that which was revealed before thee, especially the diligent in prayer and those who pay the poor-due, the believers in Allah and the Last Day. Upon these We shall bestow immense reward.