Will a Muslim be rewarded for his dutifulness to his parents, his sister, and her daughters, despite his work in a usurious bank?

Allah Almighty is a Just Judge who recompenses both the wrongdoer and the doer of good. Thus, whoever works in an interest-based bank, but also honors his parents and maintains ties of kinship, bears the sin of usury, yet receives the reward for honoring parents and maintaining kinship. All of this will be weighed on the Day of Judgment. As for giving charity from ill-gotten gains or spending it on good deeds, the person who does so will not be rewarded, for Allah is good and accepts only what is good, and ill-gotten wealth corrupts righteous deeds. A Muslim should not use righteous deeds as an incentive to commit unlawful acts; rather, he must strive to abandon unlawful acts to preserve his righteous deeds, which may be nullified by evil deeds. Similarly, a great major sin may be expiated by a great good deed, just as an evil deed may nullify a good deed.