Will a person be rewarded for their acts of worship (such as prayer, reciting the Qur'an, and fasting) if the tools used or the food consumed were purchased with unlawfully gained money or a usurious credit card, or if the recitation tool was dirty?

The preponderant view is that if someone buys something with illicit money, there is no harm in benefiting from it, because the prohibition is attached to the person's responsibility (dhimmah), not to the money itself. It is hoped that he will receive reward for the acts of obedience he performs.