What is the ruling on a bookstore owner preparing research papers for students and selling them to parents, and is the money resulting from that permissible or forbidden, and how is it purified? Does the parent sin by purchasing these research papers, and do both share in the sin of disrupting the Ministry of Education’s plans, and how do they purify themselves from that sin?

It is not permissible for teachers, researchers, or librarians to prepare research papers for students and present them as if they were the students' own work. This involves deception, lying, and contradicts the objectives of assigning research to students. This act and the payment received for it are forbidden, and it is considered cooperation in sin. Whoever commits this must repent and dispose of the earnings obtained from it by spending them on charitable causes.