﴿ إِلَّا ٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّٰلِحَٰتِ لَهُمْ أَجْرٌ غَيْرُ مَمْنُونٍۭ ﴾

“unless it be such [of them] as [repent, and] attain to faith, and do good works: for theirs shall be a reward unending!.”

except those who believe and perform righteous deeds theirs will be an unfailing reward one that is unending undiminished and not given to them in expectance of anything in return.