4:40
اِنَّ اللّٰهَ لَا یَظْلِمُ مِثْقَالَ ذَرَّةٍۚ وَاِنْ تَكُ حَسَنَةً یُضَاعِفْهَا وَیُؤْتِ مِنْ لَدُنْهُ اَجْرًا عَظٖیمًا
Inna Allaha la yathlimu mithqala tharratin wain taku hasanatan yudaAAifha wayuti min ladunhu ajran AAatheeman
Translations
Indeed, Allah does not do injustice, [even] as much as an atom's weight; while if there is a good deed, He multiplies it and gives from Himself a great reward
Saheeh International
Lo! Allah wrongeth not even of the weight of an ant; and if there is a good deed, He will double it and will give (the doer) from His presence an immense reward
Marmaduke Pickthall