4:40
إِنَّ ٱللَّهَ لَا يَظْلِمُ مِثْقَالَ ذَرَّةٍ ۖ وَإِن تَكُ حَسَنَةً يُضَـٰعِفْهَا وَيُؤْتِ مِن لَّدُنْهُ أَجْرًا عَظِيمًا
inna l-laha lā yaẓlimu mith'qāla dharratin wa-in taku ḥasanatan yuḍāʿif'hā wayu'ti min ladun'hu ajran ʿaẓīman
He does not wrong anyone by as much as the weight of a speck of dust: He doubles any good deed and gives a tremendous reward of His own.
Surely! Allâh wrongs not even of the weight of an atom (or a small ant), but if there is any good (done), He doubles it, and gives from Him a great reward.