1- There is nothing wrong with studying commerce and accounting even if it includes prohibited things such as Riba and taxes, on condition that the student or teacher believes that what Allah has forbidden of such things are indeed prohibited. 2- There is nothing wrong with studying law to understand what it involves of falsehood and warn others about it, or to benefit from what is beneficial in it while disavowing what it involves of falsehood.

There is nothing wrong with studying futures contracts and other financial contracts and dealings even if they are prohibited, subject to two conditions: 1. that the student should have enough Islamic knowledge to be able to distinguish between contracts that are permissible and those which are prohibited, 2- he should believe that what Allah has prohibited of such contracts is prohibited.