﴿ 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.”

(And when we heard the guidance) and when we heard the recitation of the Qur'an by Muhammad (pbuh) (we believed therein) we believed in the Qur'an and Muhammad (pbuh) (and whoso believeth in his Lord, he feareth neither loss) of all his works (nor oppression) nor decrease of his works.