وَأَنَّا لَمَّا سَمِعْنَا الْهُدَىٰ آمَنَّا بِهِ ۖ فَمَن يُؤْمِن بِرَبِّهِ فَلَا يَخَافُ بَخْسًا وَلَا رَهَقًا (13)
(72:13) and that 'when we heard the teaching of the Right Way we came to believe in it; he who believes in His Lord shall have no fear of suffering loss or being subjected to any injustice'; *13
*13) "Fear of loss": fear of being given a lesser reward than what one actually deserves for one's good deeds, and "injustice" that one may be deprived of the reward for the good deeds done but duly punished for the errors committed or punished innocent; no believer has any fear of such an injustice from Allah.