Surah Fussilat — Ayah 46 (41:46)
مَّنۡ عَمِلَ صَٰلِحٗا فَلِنَفۡسِهِۦۖ وَمَنۡ أَسَآءَ فَعَلَيۡهَاۗ وَمَا رَبُّكَ بِظَلَّٰمٖ لِّلۡعَبِيدِ ٤٦
English translation (Saheeh International)
Whoever does righteousness - it is for his [own] soul; and whoever does evil [does so] against it. And your Lord is not ever unjust to [His] servants.
Brief commentary
Whoever does good deeds, the benefit of his actions returns to him, because no one’s good deeds benefit Allah. And whoever does bad deeds, the effect of that return to him because no one’s sins harm Allah. Allah will soon requite each person according to what they deserve. O Messenger! Your Lord is not oppressive to His servants; He will never decrease even one good deed of theirs, nor increase an evil one.