What is the ruling on studying and teaching economics, which is concerned with studying the feasibility of economic projects in the state and private institutions, knowing that state institutions include usurious banks and government entities that deal with them? Is this permissible, taking into account the Hadith: "Whoever introduces a good practice will have its reward and the reward of whoever acts upon it until the Day of Resurrection"?

The science of economics is one of the fundamental sciences that the Muslim community needs, and learning it is a collective obligation (fard kifayah) upon Muslims. If a sufficient number of people undertake it, the sin is lifted from the rest. Its use in forbidden matters does not make it inherently forbidden; rather, the prohibition lies in its misuse. There is no sense in prohibiting it on the pretext of its potential use in forbidden matters, given the preponderance of benefit. Those who study it must be careful not to use it in usurious institutions, and they must adapt it to the rules and texts of Islamic law.