Is it obligatory to cite the source of every piece of information when summarizing lessons and transferring them to the computer? Is it permissible to use a computer with pirated software for seeking knowledge? What is the ruling on using classmates' notebooks or exercise summaries without their owners' permission?

It is permissible to summarize lessons and notes, provided the source is cited if one exists. The author's permission is not required for quoting; rather, statements should be attributed to their originators. As for the use of pirated software, it is not permissible if its owners prohibit copying without their permission, and personal use is less severe than commercial use. It is permissible to use a photocopied version of a colleague's notebook or a professor's notes, unless the professor explicitly forbids copying and photocopying. However, anything transferred from them must be attributed for academic integrity.