﴿ وَأَنَّا لَمَّا سَمِعْنَا ٱلْهُدَىٰٓ ءَامَنَّا بِهِۦ ۖ فَمَن يُؤْمِنۢ بِرَبِّهِۦ فَلَا يَخَافُ بَخْسًۭا وَلَا رَهَقًۭا ﴾

“Hence, as soon as we heard this [call to His] guidance, we came to believe in it: and he who believes in his Sustainer need never have fear of loss or injustice.”

فَمَن يُؤْمِن بِرَ‌بِّهِ فَلَا يَخَافُ بَخْسًا وَلَا رَ‌هَقًا (...so if one believes in his Lord, he will have no fear of either any curtailment [ in his reward ] or any excess [ in his punishment ]...72:13). The ward bakhs, with ba' carrying fatha ] and kha' carrying sukun, means 'to reduce the right' and the word rahaq means 'disgrace'. In other words, anyone who believes in Allah need fear neither curtailment in the reward of his good deeds, nor disgrace by excess in his punishment in the Hereafter.