It is narrated from Hazrat Abu Uthman that he says: This statement reached me from Abu Hurairah (may Allah be pleased with him) that he said: Allah Almighty gives a believer the reward of one good deed as one hundred thousand good deeds. So I came to him and said: O Abu Hurairah (may Allah be pleased with him)! I have heard from you that you say Allah Almighty gives a believer the reward of one good deed as one hundred thousand good deeds? He said: Yes, and even two hundred thousand. In the Noble Qur’an regarding this is {إنَّ اللَّہَ لاَ یَظْلِمُ مِثْقَالَ ذَرَّۃٍ وَإِنْ تَکُ حَسَنَۃً یُضَاعِفْہَا } So who knows the measure of this doubling? { وَیُؤْتِ مِنْ لَدُنْہُ أَجْرًا عَظِیمًا } He said: Paradise.